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Fuel Return Line Quick-Disconnect Connector for 2017-2020 Ford 6.7L Powerstroke If you smell diesel fuel near the passenger side of your 6.7L Powerstroke engine bay, there's a good chance the fuel return line connector is the culprit. This plastic quick-disconnect fitting lives in one of the hottest areas of the engine compartment and, over time, the locking tabs fatigue, the internal O-rings harden, and fuel begins to weep. What starts as a damp spot becomes a drip, and a drip becomes a low-pressure fuel leak that affects engine performance and creates a fire hazard. This direct-replacement connector restores a factory-tight seal on your fuel return circuit. Key Features OEM-Equivalent Quick-Disconnect: Engineered to the same dimensional specifications as Ford part HC3Z-9A564-A, ensuring a positive lock and leak-free seal on the fuel return line junction. Heat-Resistant Construction: Molded from high-temperature nylon formulated for continuous exposure to under-hood temperatures exceeding 250°F — it won't soften, deform, or lose locking tension like generic plastic fittings. Pre-Installed Viton O-Rings: The internal sealing O-rings are Viton (FKM) compound, not cheap Buna-N — Viton maintains elasticity and sealing force through diesel fuel exposure and extreme temperature cycling. Correct Locking Tab Profile: The locking tabs have the right spring tension and engagement depth to click firmly into place and stay locked — no false engagement, no unexpected disconnection from engine vibration. Wide Application Coverage: Fits all 2017-2020 Ford Super Duty trucks with the 6.7L Powerstroke, including F-250, F-350, F-450, and F-550 chassis cabs — one part number covers the entire lineup. Vehicle Compatibility Make Model Years Engine Ford F-250 Super Duty 2017-2020 6.7L Powerstroke V8 Turbo Diesel Ford F-350 Super Duty 2017-2020 6.7L Powerstroke V8 Turbo Diesel Ford F-450 Super Duty 2017-2020 6.7L Powerstroke V8 Turbo Diesel Ford F-550 Super Duty 2017-2020 6.7L Powerstroke V8 Turbo Diesel Technical Specifications Specification Value Part Type Fuel Return Line Quick-Disconnect Connector Replaces OEM HC3Z-9A564-A (Ford), FD-4625 (Dorman/Aftermarket) Fitting Type Push-To-Connect Quick-Disconnect Body Material High-Temperature Nylon Composite Internal O-Ring Material Viton (FKM) — Diesel and Heat Resistant Locking Mechanism Dual Spring-Loaded Locking Tabs Fuel Circuit Fuel Return Line (Low Pressure Side) Line Size Compatibility Standard 6.7L Powerstroke Return Line Diameter How to Identify a Failing Return Line Connector Diesel fuel odor in the cab or engine bay: Even a small weep from the return line connector produces a strong diesel smell, especially noticeable after shutdown when the engine is heat-soaked. Wet or damp appearance on the connector body: Inspect the connector with a flashlight — look for fuel staining, dampness, or accumulated dirt that's been attracted by fuel residue. Loose or wobbly connection: The connector should be firmly seated with no side-to-side play. If you can wiggle it by hand, the locking tabs are worn beyond their service life. Visible cracking or stress marks on the connector body: Nylon that's been over-heat-cycled will show white stress marks (crazing) before it cracks. This is your early warning sign. Fuel drip on the ground near the passenger-side front wheel: Return line leaks often track down the frame rail and drip in this location, making them easy to misdiagnose as a fuel tank or filler neck issue. Installation Instructions Relieve fuel system pressure by removing the fuel pump fuse (fuse #40 in the under-hood fuse box) and running the engine until it stalls before disconnecting any fuel lines. Clean the area around the connector thoroughly with brake cleaner and compressed air — you don't want any dirt or debris entering the fuel system when the line is open. To release the old connector, squeeze both locking tabs simultaneously while pulling the connector straight off the fitting. Do NOT twist or pry — this damages the metal fuel line fitting. Inspect the metal fuel line fitting on the engine for corrosion, scoring, or burrs before installing the new connector. Clean with a Scotch-Brite pad if necessary. Push the new connector straight onto the fitting until you hear an audible "click" from both locking tabs. Give it a firm pull test to confirm positive engagement before restarting the engine. Frequently Asked Questions Q: Why did my original connector fail?A: The factory connector is exposed to extreme under-hood heat, especially on trucks used for heavy towing where exhaust gas temperatures and engine bay temps run high. Over years of thermal cycling, the nylon loses its elasticity and the locking tabs relax their grip. The internal O-rings also harden and lose their ability to maintain a seal. This is a wear item, not a design defect — it's simply reached the end of its service life. Q: Can I just replace the O-rings instead of the whole connector?A: While technically possible, it's not recommended. The connector body itself fatigues over time, and by the time the O-rings have failed, the locking tabs are usually compromised as well. Replacing the complete connector eliminates both failure points in one service. The part is inexpensive enough that the labor savings of doing it once justify the complete replacement. Q: Will this fit a 2011-2016 6.7L Powerstroke?A: No. The 2011-2016 trucks use a different fuel system layout with different connector configurations. This connector is designed for the 2017-2020 model years. Please verify your truck's production date — mid-cycle connector changes can occur. Q: Is this a high-pressure fuel line connector?A: No, this is a fuel return (low-pressure) line connector. It carries fuel returning from the injectors and the high-pressure pump back to the fuel tank at relatively low pressure. It should not be used on the high-pressure fuel feed lines between the HPFP and the fuel rails.

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R12T Fuel Filter Water Separator — Complete Combo Kit R12T Marine Fuel Water Separator — 10 Micron, 15GPH, Replaces Racor S3240 / 120AT, NPT ZG1/4-19. Fits gas & diesel engines on boats, trucks, tractors, and generators. Complete combo kit includes the spin-on filter housing, two inlet/outlet fittings, two plugs, and a reusable clear nylon collection bowl with self-venting drain valve. 📋 Key Takeaways ✅ Complete combo kit — no separate parts to buy ✅ 10-micron filtration — removes water and particles down to 10 microns ✅ NPT ZG1/4-19 ports with M18×1.5 center thread ✅ Reusable nylon collection bowl with self-venting drain valve ✅ Replaces Racor S3240, 120AT, Sierra 18-7987, RK10222 Features & Benefits Feature Benefit 10-Micron Filtration Media Captures emulsified water and fine particles before they reach your injectors — prevents injector seizure and CP4 pump failure 30 GPH Flow Rate Supports high-performance and fleet diesel engines without fuel starvation Clear Nylon Collection Bowl Visual inspection of water accumulation at a glance — no guesswork needed Self-Venting Drain Valve Tighten to seal, release to drain — service in under 2 minutes without tools Dual-Sided Port Configuration Inlet/outlet can run same-side or opposite-side to fit any engine bay layout Powder-Coated Steel Housing Electrostatic coating resists corrosion from saltwater, road salt, and diesel fuel Spin-On Design Tool-free filter replacement — just spin off the old, spin on the new Compatibility & Cross-Reference Part Number Brand R12T / 120AT Racor / Parker S3240 Racor 18-7987 Sierra Marine RK10222 Sierra Common Applications Diesel trucks — Duramax, Powerstroke, Cummins fuel system protection Marine engines — Yanmar, Volvo Penta, Mercury, Yamaha outboard/inboard Agricultural equipment — Kubota, John Deere, CAT, Case IH tractors Generators — Cummins Onan, CAT standby generators Off-road equipment — excavators, skid steers, bulldozers Specifications Part Number FJ-R12T (iFJF) Filter Type Spin-On Fuel Filter / Water Separator Micron Rating 10 Micron Flow Rate 15 GPH ( 57 LPH) Port Size NPT ZG1/4-19 (M18×1.5 Center Thread) Bowl Material Clear Nylon (Reusable, Self-Venting) Housing Material Powder-Coated Steel (Corrosion Resistant) Includes 1× Filter Assembly, 2× Fittings, 2× Plugs, 1× Nylon Bowl Why Choose iFJF? We built the R12T to match — and in many ways exceed — the OEM Racor specification. Every unit is: 🔍 Factory-tested for 10-micron filtration efficiency and 15 GPH flow rate 🛡️ Powder-coated inside and out for rust-free service life in marine environments 📦 Ready to install — includes fittings, plugs, and drain bowl in one box 💰 Priced for boat and fleet owners — premium filtration without the OEM markup Want to see how the R12T stacks up against the genuine Racor? Read our R12T vs Racor 120A comparison review → Looking for the upgradable R12H system (replace only the filter element, not the whole housing)? Check out the R12H Filter Element here → Frequently Asked Questions What's the difference between R12T and R12H? The R12T is a complete disposable filter assembly — when it clogs, you replace the entire unit including the housing. The R12H system is upgradeable: you keep the aluminum housing and only swap the filter cartridge. If you do frequent filter changes, the R12H upgrade pays for itself within 2-3 services. Does this fit my boat/diesel engine? The R12T fits any engine with NPT ZG1/4-19 (M18×1.5 center thread) ports. It's commonly used on Yanmar, Volvo Penta, Mercury, Cummins, and Kubota engines. If you're unsure about fitment, contact us with your engine model. How often should I replace the R12T filter? Replace every 100-200 hours of engine operation, or annually — whichever comes first. In marine environments or if you use biodiesel, inspect the clear bowl at every fill-up and drain water as needed. Visual inspection: if the bowl shows more than 1/2" of water or the filter media appears dark/saturated, replace immediately. How do I drain water from the R12T bowl? Simply loosen the drain valve at the bottom of the clear nylon bowl — water and contaminants will drain out by gravity. Tighten the valve to seal. No tools required. Pro tip: keep a small catch cup under the bowl before opening the valve to avoid diesel on your bilge or garage floor. Can I use this with biodiesel? Yes — the R12T is compatible with B5-B20 biodiesel blends. However, biodiesel tends to hold more dissolved water than petroleum diesel, so we recommend more frequent bowl draining (every 25-50 hours) when running biodiesel. The powder-coated steel housing resists the higher corrosion potential of biodiesel blends. What cross-reference replacements match this filter? This R12T replaces: Racor S3240 / 120AT, Sierra 18-7987 / RK10222. It shares the same 10-micron rating, NPT ZG1/4-19 port size, and 30 GPH flow rate as the OEM Racor unit — at a more competitive price point. How do I install the R12T fuel filter assembly? Remove the old filter by spinning it counterclockwise (have a catch pan ready for residual fuel) Clean the mounting bracket surface and apply a thin film of diesel to the new filter's gasket Screw in the two inlet/outlet fittings (choose same-side or opposite-side configuration) Install the two plugs in the unused ports Spin the new R12T onto the mounting head clockwise until the gasket contacts, then tighten 3/4 turn by hand — do not overtighten Prime the system using the manual primer pump and check for leaks at all four ports Package Includes 1 × R12T Fuel Filter / Water Separator Complete Assembly 2 × NPT ZG1/4-19 Inlet/Outlet Fittings 2 × NPT ZG1/4-19 Plugs 1 × Clear Nylon Collection Bowl with Self-Venting Drain

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Product Overview Keep your RV generator running smoothly with this premium replacement air filter for Cummins Onan 5500 and 7000 Marquis Gold / RV QG series generators. This direct replacement for part number 140-3116 provides OEM-equivalent filtration performance at a value price point. A clean air filter is critical for generator performance — dirty or clogged filters cause hard starting, rough running, increased fuel consumption, and accelerated engine wear. Replace annually or every 150 hours of operation for optimal performance. Key Features Direct OEM Replacement — Replaces Cummins Onan 140-3116 High-Capacity Pleated Media — Maximizes dirt-holding capacity for extended service intervals Precision-Fit Frame — Drops into factory air box with no modifications Oil-Free Synthetic Media — No oiling required, no MAF sensor contamination risk ISO 5011 Tested — Meets or exceeds OEM filtration efficiency standards Compatibility Generator Series Models Cummins Onan Marquis Gold 5500, 7000 Cummins Onan RV QG 5500, 7000 Part Number 140-3116 Specifications Specification Value Filter Type Panel Air Filter (Dry) Media Synthetic Pleated Service Interval 150 Hours or 12 Months Fitment OEM Drop-In Replacement Why Replace Your RV Generator Air Filter? Easier Starting — Restricted airflow makes generators hard to start Better Fuel Economy — Clean filter = proper air/fuel ratio = less fuel burned Longer Engine Life — Filtration prevents abrasive dust from entering cylinders Full Power Output — Don't let a clogged filter rob you of wattage when you need it most Frequently Asked Questions Q: How do I know when to replace my generator air filter?A: Visual inspection is best — if the filter appears dark, dirty, or clogged, replace it. Cummins Onan recommends replacement every 150 hours of operation or annually, whichever comes first. Replace more often in dusty environments. Q: Will this fit my Onan 5500 Marquis Gold?A: Yes, this is a direct OEM replacement for all Cummins Onan 5500 and 7000 Marquis Gold and RV QG series generators. Q: Does this filter need to be oiled?A: No. This is a dry synthetic media filter — no oiling required. Simply drop it in. Oil-type filters can contaminate MAF sensors and are not recommended for generator applications. Q: Can I clean and reuse this filter?A: No, this is a single-use disposable filter. Attempting to clean it can damage the filter media and reduce filtration efficiency. Replace with a new filter at each service interval. Installation Turn off generator and allow to cool Locate air filter housing (typically on side of generator) Release housing clips or screws Remove old filter and dispose properly Insert new filter — ensure proper orientation Re-secure housing and start generator to verify Related Products Onan Generator Spark Plug 167-1638 — Complete tune-up Browse All RV Parts Related Blog Posts RV Generator Maintenance Tips

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Fitment:68065612AA Fuel Filter Canister Housing Cover Cap for Ram 6.7L Cummins Diesel Engine 2500 3500 4500 5500 2010-2018Replacement part number:68065612AAPackage Includes:A CAP ONLY.Anodized black.(Your new filter comes with o ring, so we don’t provide it)Advantage:Our cap is carefully crafted with CNC billeted aluminum for longer-lasting durability and reliability over your standard plastic cap.Easy to install:Without the OEM cap’s rounded edges you can simply use a 1 1/8" socket wrench to remove your old cap and screw your new cap on its place.

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Product Overview High-quality replacement oil filter for Cummins Onan RV generators including QG 5500, QG 7000, Marquis Gold, and HGJAA/HGJAB series. Features premium cellulose/synthetic blend filtration media trapping contaminants to 25 microns, silicone anti-drain back valve preventing dry starts, and thick-wall steel canister for RV generator compartment durability. Direct spin-on OEM replacement. Key Features Premium Filtration Media — High-efficiency cellulose/synthetic blend traps contaminants while maintaining oil flow for sustained generator operation. Direct OEM Replacement — Replaces Cummins Onan 122-0836 — identical thread pitch, gasket diameter, and bypass valve settings. Silicone Anti-Drain Back Valve — Retains oil in the filter between runs, eliminating damaging “dry start” wear on generator startup. Heavy-Duty Canister — Thick-wall steel resists stone impacts, road debris, and constant vibration in RV generator compartments. Extended Protection — Designed for demanding RV generator conditions — sustained loads, vibration, and temperature extremes. Compatibility Make Model Year Range Notes Cummins Onan QG 5500 All Years HGJAA / HGJAB Series Cummins Onan QG 7000 All Years HGJAA / HGJAB Series Cummins Onan Marquis Gold 5500/7000 All Years HGJAA / HGJAB Series Specifications Specification Value Part Number 122-0836 (Replacement) Thread Standard Spin-On Filtration Media Cellulose / Synthetic Blend Anti-Drain Back Valve Silicone Micron Rating 25 Micron Nominal Why Choose iFJF RV generators run under heavy loads in harsh conditions. A quality oil filter is the first line of defense. Our 122-0836 replacement delivers OEM-equivalent protection at a better price — so you can stick to the 150-hour maintenance interval affordably. Frequently Asked Questions Q: How often change generator oil and filter?A: Cummins Onan recommends every 150 hours or annually. Change every 100 hours in dusty conditions or with heavy use. Q: Will this fit my Onan generator?A: Fits QG 5500, QG 7000, Marquis Gold, and all HGJAA/HGJAB series using 122-0836 filter. Direct spin-on replacement. Q: Is this OEM Cummins?A: High-quality aftermarket replacement meeting OEM 122-0836 specs. Same performance — better value than dealer pricing. Q: Why is an anti-drain back valve important?A: Prevents oil draining from filter when generator is off, ensuring immediate pressure on startup and eliminating dry start wear. Q: What oil should I use?A: Cummins Onan recommends SAE 15W-40 diesel-rated oil for most generators. Check owner’s manual for your specific model. Related Products Complete generator maintenance: RV Generator Fuel Filter for clean fuel, Generator Spark Plug Set for reliable starting, Generator Air Filter for proper intake.

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R12H Filter Element 2-Pack — Double the Protection, Half the Hassle Stock up and save with the iFJF R12H 10-micron replacement filter element twin pack. Keep one on your boat and one in your maintenance kit — never run your engine with a clogged filter again. Designed exclusively for the R12H aluminum fuel water separator assembly. Why Buy the 2-Pack? 💰 Save vs. Buying Singles — Two elements at a bundled price beats buying individually. ⛵ Always Ready at Sea — Keep a spare onboard. When water contamination hits mid-voyage, you can swap in minutes. 🔧 Fleet & Workshop Friendly — If you maintain multiple boats, diesel trucks, or equipment, the 2-pack keeps your service bay stocked. 📦 Free Storage — Filter elements don't expire. Buy now, use when you need them. Key Features 10-Micron Advanced Filtration — Removes water and contaminants as small as 10 microns from your fuel system. Precision Fit for R12H Assembly — Drop-in replacement, zero modifications required. 15 GPH Flow Rate — Maintains full fuel flow for high-performance marine and diesel applications. High-Capacity Media — Extended service life compared to generic alternatives. Genuine iFJF Quality — Not a generic substitute. Engineered to the exact specifications of our R12H system. Compatibility ⚠️ Exclusively for iFJF R12H Fuel Water Separator Assembly. Not compatible with sealed R12T units. Replaces filter cartridges in assemblies that match S3240, 120AT, 18-7987, RK10222 form factors. Specifications Pack Size 2 Filter Elements Filtration Rating 10 Micron Compatible Assembly iFJF R12H Fuel Water Separator Flow Rate 15 GPH (per element, in R12H assembly) Replaces Part # S3240 · 120AT · 18-7987 · RK10222 Recommended Interval Every 100 hours or annually per element Installation — Quick & Simple Shut off fuel supply to the R12H assembly Unscrew the aluminum housing Remove the old filter element (firm push required) Lubricate the O-rings with clean fuel Insert the new element, reassemble, and fill with fuel Start engine — done in under 10 minutes! Frequently Asked Questions Q: Two elements — how long will they last?A: With recommended 100-hour replacement intervals, a 2-pack covers up to 200 operating hours or 2 years of seasonal boating. Q: Buy 2-pack or single?A: If you plan on keeping your boat/truck for more than one season, the 2-pack saves you money plus you always have a spare. Need just one? Single pack here. Q: Don't have the R12H assembly yet?A: Get the complete R12H combo here — includes the aluminum housing + 3 filter elements + all fittings. Complete Your Setup 🛒 R12H Complete Assembly — The full system with aluminum housing 🛒 Single Filter Element — Individual replacement cartridge R12T Fuel Filter Water Separator Complete Combo Kit →

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Product Overview The 12642623 Fuel Filter Housing Assembly is a complete, ready-to-install fuel filtration unit designed for 2005–2013 GM Duramax 6.6L V8 diesel engines. This all-in-one kit replaces the failure-prone OEM plastic housing with a billet aluminum filter head featuring electrophoresis anti-corrosion coating, paired with the TP3018 dual-layer 5-micron filter element and a 12639277 Water-in-Fuel (WIF) sensor. Whether you're chasing a persistent P0087 low fuel pressure code, dealing with a cracked factory housing, or performing preventive maintenance on your LBZ/LLY/LMM, this assembly delivers OEM-grade performance at a fraction of dealer cost. Key Features Billet Aluminum Filter Head — CNC-machined from solid 6061 aluminum with electrophoresis surface treatment. Won't crack, warp, or strip threads like the factory plastic housing. Includes a pre-installed heater plug and an upgraded aluminum air bleeder screw. Dual-Layer 5-Micron Filtration — The TP3018 filter element uses a multi-layer media design: 15-micron outer layer for coarse debris + 5-micron inner layer for fine particle capture. Protects your CP3 injection pump and injectors from catastrophic contamination. 98% Water Separation Efficiency — Advanced coalescing media strips emulsified water from diesel fuel, preventing injector tip erosion, microbial growth, and winter freeze-ups. Integrated WIF sensor alerts you before water reaches the injection system. Complete Drop-In Assembly — Includes filter head, filter element, WIF sensor, heater plug, and aluminum bleeder screw — 100% pre-assembled. Bolts directly to factory mounting points on the engine valley. No adapters, no modifications. OEM Cross-Reference — Replaces GM 12642623, ACDelco TP3018, Delphi HDF946, WIX 33641, Baldwin BF46024, and more. Same form factor as the dealer part at 40–50% less. IATF 16949 Certified Manufacturing — Produced in ISO/TS-certified facilities with 100% leak testing before shipping. Every unit is pressure-tested to 150 PSI. What's Included Component Description Part Number Filter Head / Housing Billet aluminum, electrophoresis coated, with heater port + bleeder screw 12642623 Fuel Filter Element Dual-layer cellulose/synthetic media, 5μm absolute / 15μm nominal TP3018 Water-in-Fuel Sensor 8-sided design, compatible with 2001–2011 Duramax ECU systems 12639277 Aluminum Bleeder Screw Replaces OEM plastic screw — won't strip or crack under repeated use (Included) Heater Plug Pre-installed in filter head for cold-weather fuel heating (Pre-installed) Compatibility / Fitment Year Make Model Engine Engine Code Notes 2004.5–2005 Chevrolet / GMC Silverado/Sierra 2500HD 3500 6.6L V8 Diesel LLY ✅ Direct fit 2006–2007 Chevrolet / GMC Silverado/Sierra 2500HD 3500HD 6.6L V8 Diesel LBZ ✅ Direct fit 2007.5–2013 Chevrolet / GMC Silverado/Sierra 2500HD 3500HD 6.6L V8 Diesel LMM ✅ Direct fit 2005–2007 Chevrolet / GMC Silverado/Sierra 3500 (non-HD) 6.6L V8 Diesel LLY/LBZ ✅ Direct fit 2001–2004 Chevrolet / GMC Silverado/Sierra 2500HD 3500 6.6L V8 Diesel LB7 ⚠️ Requires hose modification (see FAQ) 2006–2016 Chevrolet Express 2500/3500/4500 6.6L V8 Diesel LBZ/LMM/LGH ✅ Direct fit 2006–2016 GMC Savana 2500/3500/4500 6.6L V8 Diesel LBZ/LMM/LGH ✅ Direct fit Specifications Specification Value Brand iFJF Part Number (Assembly) 12642623 Filter Element PN TP3018 WIF Sensor PN 12639277 Filter Head Material 6061 Billet Aluminum + Electrophoresis Coating Filter Media Dual-Layer Cellulose / Synthetic Blend Filtration Rating 5 Micron Absolute (Inner) / 15 Micron Nominal (Outer) Water Separation ≥98% Efficiency (SAE J1488) WIF Sensor Connector 8-Sided Design (2001–2011 ECU Compatible) Bleeder Screw Aluminum (CNC-machined, knurled grip) Heater Element Pre-installed, 12V DC OEM Cross-References GM 12642623, ACDelco TP3018, Delphi HDF946, WIX 33641, Baldwin BF46024, Donaldson P553191, Fleetguard FS19789 Manufacturing Standard IATF 16949 / ISO 9001 Why Upgrade from the OEM Plastic Housing? The factory plastic fuel filter housing on 2005–2013 Duramax engines is a well-documented failure point. Heat cycling from the engine valley causes the plastic to become brittle over time. Common symptoms of a failing housing include: Cracked bleeder screw threads — OEM plastic threads strip after 2–3 filter changes, causing air intrusion and hard starts Warped sealing surfaces — Plastic warps under heat, creating vacuum leaks that trigger P0087 (Low Fuel Rail Pressure) Stripped mounting bolt holes — Torque spec is only 18 ft-lbs on plastic; over-tightening destroys the threads permanently Heater plug corrosion — The factory heater connector corrodes in humid climates, causing intermittent open-circuit codes This billet aluminum replacement solves all four problems permanently. The electrophoresis coating provides superior corrosion resistance, and the CNC-machined bleeder screw threads will never strip — even after dozens of filter changes. Premium Manufacturing — Why Our Housing Outlasts the Competition Dual-Process Protection Our fuel filter head is CNC-machined from solid 6061 aluminum alloy billet and undergoes two protective processes that cheaper competitors skip entirely: Black Electrophoresis Coating — An electrochemical process that bonds a corrosion-resistant layer to every surface of the aluminum head, inside and out. Unlike simple paint or anodizing, electrophoresis penetrates every thread, port, and cavity — preventing rust, oxidation, and surface degradation even after years of heat cycling in the engine valley. CNC Thread Finishing — After electrophoresis, all threaded surfaces receive a precision CNC finishing pass. This critical second step prevents any coating material from contaminating your fuel system and ensures smooth, accurate thread engagement every time you change a filter. US (iFJF) — Reinforced metal fuel line fittings with electrophoresis finish vs generic competitor connections US vs. The Competition — What's Really Inside Your Filter Housing? Not all 12642623 filter housings are created equal. Here's what separates a premium iFJF unit from the cheaper alternatives flooding the market: Feature iFJF (This Product) Cheap Competitors Filter Head Material 6061 Billet Aluminum + Electrophoresis + CNC Cast aluminum or plastic composite Bleeder Screw CNC Aluminum — Lifetime durable Plastic — Strips after 2-3 uses Fuel Line Fittings Reinforced metal swaged connections Basic press-fit or wrong orientation Internal Components Full sensor & seal assembly Missing or simplified internals WIF Sensor 8-Sided precision molded (2001-2011 ECU) Generic 12-sided (often incompatible) Heater Plug Pre-installed & sealed Often missing or unsealed Quality Testing 100% pressure tested at 150 PSI Spot-checked or untested US (iFJF) — Full internal sensor and seal assembly engineering vs stripped-down competitor housing Important Fitment Warning: Some low-quality housings on the market have fuel line fittings facing the wrong direction (outward instead of inward). These physically cannot connect to your truck's fuel lines. iFJF products are engineered to match the exact OEM orientation — verified on every unit before shipping. Always check that your fuel line connectors point inward toward the engine valley before purchasing. Aluminum Bleeder Screw — The Small Part That Makes a Big Difference One of the most common failure points on the factory fuel filter housing is the plastic bleeder screw. After just 2-3 filter changes, the OEM plastic threads soften, wear down, and eventually strip — making it impossible to bleed air from the system. Once stripped, you're faced with replacing the entire housing. Our solution: a CNC-machined aluminum bleeder screw with knurled grip, pre-installed on every housing. Key advantages: Never strips — Aluminum threads maintain precision engagement through dozens of filter changes Easy grip — Knurled surface provides positive finger traction even with diesel on your hands Corrosion-proof — Same electrophoresis coating as the filter head body O-ring sealed — Viton O-ring provides leak-free sealing without over-tightening What Our Customers Are Saying Rated 4.2 out of 5 stars from 470+ reviews on Amazon: Rating Area Positive Reviews What Customers Say Installation 87% (15/17) "Fit like a glove...easier than replacing the filter only" Value for Money 93% (14/15) "Cheaper and better than OEM...great value" Fitment 75% (12/16) "Perfect fit...dropped right into place" "Fixed the issues I was having. Cheaper and better than OEM. Fit was perfect, easy installation." — Real verified Amazon customer reviews for this product. iFJF — Engineered Protection for Diesel Enthusiasts. Premium automotive filters manufactured to IATF 16949 standards with fast US fulfillment. Why Choose iFJF? ✅ Same Quality as OEM — 30–50% Less: IATF 16949 certified manufacturing, 100% pressure-tested ✅ US-Based Inventory & Fast Shipping: Ships from domestic warehouse — no 3-week overseas wait ✅ 30-Day Money-Back Guarantee: If it doesn't fit or perform, return it for a full refund ✅ Real Diesel Tech Support: Our team knows these trucks. Email us with any installation questions. Related Products Complete your Duramax fuel system service with these complementary parts: Standalone 12642623 Filter Head — Billet aluminum head only, if you already have spare TP3018 filters — $57.99 TP3018 Replacement Filter Element — 5-micron dual-layer filter, sold individually — $27.99 Fuel Filter Head Rebuild Kit — 6-piece seal kit + billet aluminum bleeder screw — $23.99 Fuel Filter Head Spacer Kit — 1/2" aluminum spacer for lifted/custom applications — $15.99 1R-0750 Filter + Refit Head Combo — Cat 1R-0750 high-efficiency filter upgrade with refit head — $97.99 Installation & Maintenance Resources 📖 How to Install Duramax LB7 Injectors — Covers fuel system priming and leak-check procedures 📖 2006-2007 LBZ Duramax Cold Air Intake Install Guide — Engine bay access tips for filter housing service 📖 Chevy Express / GMC Savana Duramax Diesel Van Maintenance — Filter change intervals for commercial van fleets 📖 Diesel Fuel Filter Replacement: The Complete Guide — Covers Cummins, Powerstroke & Duramax fuel filter service intervals Frequently Asked Questions Q: Will this fit my 2005 Chevy Silverado 2500HD with the LLY engine?A: Yes — direct bolt-on fit. The 2004.5–2005 LLY uses the same fuel filter housing mounting pattern as the 2006–2007 LBZ and 2007.5–2013 LMM. No modifications needed. Q: I have a 2003 LB7 Duramax — will this work?A: Yes, but the fuel supply/return hoses on the 2001–2004 LB7 are shorter than the 2005+ models. You will need to extend or replace the hoses to reach the filter head ports. Many LB7 owners use this as an opportunity to upgrade to braided stainless lines. The mounting bolt pattern and electrical connector are identical. Q: Does this include the filter element, or do I need to buy that separately?A: This is a complete assembly — the TP3018 dual-layer filter element comes pre-installed in the housing. You also get the 12639277 WIF sensor, heater plug, and aluminum bleeder screw. Unbox, bolt on, connect hoses, prime, and go. Q: How often should I replace the fuel filter?A: GM recommends every 15,000 miles under normal conditions. If you tow heavy, idle frequently, run biodiesel blends (B5–B20), or operate in dusty conditions, replace every 10,000 miles. The TP3018 replacement filter element is available separately — shop TP3018 filters here. Q: My truck is throwing a P0087 (Low Fuel Rail Pressure) code. Will this fix it?A: A cracked or warped filter housing is one of the most common causes of P0087 on Duramax engines — air enters the fuel system through a failed housing seal, causing pressure drop at the rail. Replacing the housing with this billet aluminum unit often resolves the issue. If the code persists after replacement, inspect the CP3 injection pump, fuel pressure regulator, and fuel lines for additional leaks or restrictions. Q: Do I need to prime the fuel system after installing this?A: Yes. After installation, cycle the ignition key to "ON" (do not start) 5–7 times. Each cycle runs the in-tank lift pump for approximately 30 seconds. You should hear the pump prime and feel fuel moving through the system. Once you hear the pump tone change (indicating the system is pressurized), start the engine and check for leaks at all connections. Q: What's the difference between this aluminum head and your standalone 12642623 filter head?A: This listing is the complete assembly — filter head + filter element + WIF sensor, ready to install. Our standalone 12642623 filter head is just the billet aluminum housing for customers who already have spare TP3018 filters and a working WIF sensor. Q: Can I use this with a lift pump or FASS/AirDog system?A: Yes. This filter head is compatible with aftermarket lift pump systems. The 1/2" NPT ports accept standard AN/JIC fittings. If you're running a high-flow system (FASS Titanium, AirDog II-4G), we recommend pairing this assembly with our 1R-0750 Cat filter upgrade for maximum flow rate. Q: What's the warranty?A: All iFJF products include a 30-day money-back guarantee and a 1-year warranty against manufacturing defects. If you experience any leaks, thread issues, or sensor failures, contact us with your order number for a replacement or refund. ⚠️ Installation Note: Installing a new fuel filter housing requires working with diesel fuel. Work in a well-ventilated area, wear nitrile gloves and safety glasses, and have rags ready for fuel spills. If you are not comfortable working on your vehicle's fuel system, have a qualified diesel mechanic perform the installation. Always prime the system before starting the engine to prevent CP3 pump damage.

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Marine-Grade Fuel Water Separator — Protect Your Engine, Save on Maintenance R12H Marine Fuel Water Separator — 10 Micron, 15 GPH, Aluminum Alloy, Replaces Racor S3240 / 120AT, NPT ZG1/4-19. Upgraded detachable filter element design: replace only the cartridge, keep the housing — saves up to 60% vs. disposable units. Complete kit includes aluminum housing, 3 filter elements, 4 O-rings, 2 inlet/outlet fittings, and 2 plugs. Key Features Detachable Spin-On Design — Replace only the filter element, not the entire unit. Quick tool-free cartridge swaps. Aluminum Alloy Body + Powder Coating — Superior corrosion resistance against seawater and harsh marine environments. Built to outlast iron/steel alternatives. 15 GPH High Flow Rate — Engineered for high-performance marine and diesel applications. Maintains fuel pressure under load. 10-Micron Advanced Filtration — High-capacity filter media removes water and particles as small as 10 microns for clean, water-free fuel delivery. Transparent Nylon Collection Bowl with Drain Valve — Visually inspect water accumulation and drain with a simple twist of the black valve. What's Included (Complete Combo) 1 x R12H Fuel Water Separator Assembly (aluminum housing + base) 3 x Filter Elements (1 installed + 2 bonus spares) 4 x O-Rings (2 installed + 2 bonus spares) 2 x NPT/ZG1/4-19 Connection Fittings 2 x Plugs for unused ports Installation Instructions Specifications Model R12H (R12T Upgrade) Material Aluminum Alloy + Powder Coating Flow Rate 15 GPH (57 LPH) Filtration 10 Micron Port Size NPT / ZG1/4-19 Filter Type Spin-On, Replaceable Cartridge Replaces Part # S3240, 120AT, 18-7987, RK10222, R12T Applications Marine boats, diesel trucks, generators, oil storage equipment Easy Installation — No Professional Tools Required (Boats) Designed for DIY boat owners. Comes with detailed step-by-step instructions: Apply fuel to both O-rings for lubrication before assembly Mount the unit securely — use screws on a wood board (min 1cm) with marine adhesive if you prefer not to drill into your boat Fill the filter housing completely with fuel before starting the engine to prevent air-lock Periodically check the collection bowl and drain accumulated water via the drain valve For automotive/diesel truck installation, professional installation is recommended. Frequently Asked Questions Q: What is the difference between R12H and R12T?A: The R12T has a sealed, non-removable filter element — you must replace the entire housing. The R12H has a detachable cartridge: keep the housing, replace only the internal filter, saving you money every service. Q: Will this fit my boat?A: As long as you have sufficient mounting space, it works for boats, cars, diesel trucks, and fuel storage equipment. Ports: NPT/ZG1/4-19. Q: Why won't my engine start after installation?A: You must fill the filter housing completely with fuel before starting. An empty filter causes air-lock and starting failure. Q: How often should I replace the filter element?A: Every 100 hours of operation or annually, whichever comes first. Check the transparent bowl regularly for water accumulation. Q: Is this compatible with Racor / Sierra / Yamaha systems?A: This replaces S3240 and 120AT filter elements commonly used across marine brands. Verify your port size (NPT/ZG1/4-19) and mounting space before ordering. WHOLESALE INQUIRIES Bulk pricing available for marine dealers, fleet operators, and distributors. Contact us for wholesale discounts. R12T Fuel Filter Water Separator Complete Combo Kit →

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Product Overview The S3213 fuel water separator with clear drain bowl gives you instant visual confirmation of your fuel condition — no tools, no disassembly, no guesswork. A quick glance at the transparent nylon bowl tells you whether water has accumulated in the filter. Same 10-micron filtration media and 3/8" NPT fit as the standard S3213, now with a built-in drain valve for fast water purging. If you've ever wondered whether your fuel filter actually has water in it, this is the upgrade that answers that question in seconds. Key Features Clear Nylon Drain Bowl: Visually check for water accumulation without removing the filter. Catch water contamination before it reaches your injectors. Built-In Drain Valve: Purge accumulated water in seconds — no tools needed. Just open the valve, drain until clean fuel flows, close it, and you're done. 10-Micron Filtration Media: Same trusted S3213 filtration performance. Traps water droplets, rust, and debris down to 10 microns. 3/8" NPT Inlet/Outlet: Direct replacement for OEM filter heads. Uses standard marine fuel line fittings. Includes Mounting Bracket: Comes with the 18-7853-1 style mounting bracket and hardware — bolt-on ready out of the box. Compatibility & Fitment Brand Part Numbers Replaced Mercury / Mariner 35-60494-1, 35-809097, 802893Q01, 35-807172 Sierra Marine 18-7928-1, 18-7932-1, 18-7922, 18-7919 Mallory 9-37801, 9-37802 Moeller / Tempo 033510-10, 035613-10 GLM Marine 24960, 24961 Wix Filters 33264, 33265 Universal Cross-Ref S3213, S3214, B32013, C14568 Fits most Mercury, Mariner, Yamaha, Suzuki, Honda, and Tohatsu outboard motors with 3/8" NPT fuel connections, 1990-present. Specifications Specification Value Filter Type Fuel Water Separator with Clear Drain Bowl Micron Rating 10 Micron Port Size 3/8" NPT (Inlet & Outlet) Bowl Material Clear Nylon (UV-Stabilized, Ethanol-Resistant) Canister OD 3.0" (76 mm) Overall Height (incl. bowl) ~6.5" (165 mm) Replacement Interval 50-100 Hours or Annually Included Components Filter Assembly, Clear Bowl, Drain Valve, Mounting Bracket, Gasket, Hardware Why Choose This Filter The clear bowl is not a gimmick — it's a genuine time-saver and safety feature. Before every outing, you can verify fuel condition in under 10 seconds. No unthreading the filter, no catching fuel in a cup, no guessing. Every S3213 assembly ships from US inventory with a 30-day satisfaction guarantee. Most orders ship same-day. Frequently Asked Questions Q: How do I know when to drain the bowl? A: Check the clear bowl before each outing. If you see a visible water layer forming at the bottom (water sinks below fuel), open the drain valve and let it empty until clean fuel flows. The clear bowl makes this a 10-second pre-trip ritual. Q: Will the clear bowl crack or yellow over time? A: The R25T-style nylon bowl is UV-stabilized and ethanol-resistant. With normal care it should last multiple seasons. If it eventually clouds or develops a crack, replacement bowls are available separately in our store. Q: What's included in the box? A: Complete S3213 filter assembly with clear bowl, drain valve, mounting bracket with 3/8" NPT ports, installation gasket, and mounting hardware. Everything needed for a bolt-on installation. Q: Does the drain bowl fit a standard sealed S3213? A: No — the bowl threads onto the bottom of this specific S3213 assembly body. The sealed one-piece S3213 does not have a threaded bowl port. If you want a bowl setup, this is the correct product. Q: Is this compatible with ethanol-blended fuel (E10)? A: Yes. The clear nylon bowl, internal seals, and filtration media are all designed to handle E10 and non-ethanol marine fuel without degradation. Q: How is this different from the upgraded replaceable-filter S3213? A: This is a traditional sealed filter assembly — you replace the entire unit at service time. The upgraded version (linked below) has a reusable aluminum housing with replaceable internal cartridges. Both include a clear bowl. Choose based on whether you prefer lower upfront cost or lower long-term cost. Q: Can I replace just the filter element inside? A: No — this S3213 is a sealed assembly. The entire canister is replaced at service time. If you want a serviceable filter where you only swap the cartridge, see our upgraded S3213 below. 🔄 Upgrade Available: Replaceable Filter S3213 We now offer an upgraded S3213 with a replaceable filter element — lower long-term cost, less waste. Same 10-micron filtration, same 3/8" NPT fit. Upgraded S3213 ($27.99) → — Replaceable element, includes clear bowl Replacement Cartridge ($10.00) → — Single 10-micron filter element 3-Pack Cartridges ($19.00) → — Best value at $6.33 each

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Includes:Automotive Replacement Filter.Replaces R12T S3240 120AT,Replaces 18-7947,Replaces RK10222. R12T Replacement filter of Marine Fuel Filter Water Separator NPT,ZG1/4-19.It can be used for diesel. Filters are designed for high performance applications,and with flow rate of 15 GPH on the R12T model,your engine will perform better than ever with clean,water-free fuel. Don't be caught in the water without one of these diesel spin-on filters.Filter Rating:10 Micron. Fuel Water Separator Filter fit 3/8 Inch NPT Outboard Motors as well. R12T Fuel Filter Water Separator Complete Combo Kit →

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Fuel Filter & Cap Kit for 1999-2003 Ford 7.3L PowerstrokeComplete fuel filter and cap kit for 1999-2003 Ford 7.3L Powerstroke diesel. Includes FD-4596 filter element, F81Z-9G270-BA cap, and new O-ring.Q: How often change?A: Every 15,000 miles or at each oil change interval.Q: Fits 6.0L?A: No — this is for the 7.3L Powerstroke (1999-2003) only.

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491 Fuel Filter Bowl Wrench — The Right Tool for 495/496 Hyaline Bowls The iFJF 491 bowl wrench is purpose-built for the 495-4 and 496-series fuel filter bowls. Unlike generic strap wrenches or channel locks that slip, gouge, or crack the hyaline (clear plastic) bowl, this wrench grips the bowl's flats precisely — delivering the torque you need without the damage you don't. Key Features Perfect Fit, No Damage: Engineered with a 3.35" (85mm) inner diameter that mates perfectly with the 495-4 and 496 bowl flats. No metal jaws biting into plastic — the wrench contacts only the designed wrench flats. Hyaline-Safe Design: Clear fuel filter bowls are made from rigid polymer that cracks easily under point-load pressure from generic tools. This wrench distributes force evenly across the flats, eliminating stress cracks that lead to air leaks and fuel drips. Durable Steel Construction: Heavy-gauge stamped steel with a corrosion-resistant finish. Won't flex or spread under torque. 1/2" Square Drive or Wrench Compatible: Accepts a standard 1/2" ratchet or breaker bar, or a 24mm socket/wrench on the hex head for tight-clearance installations. Universal for 495/496/497 Series: Fits all 495-4, 495-3/4, 496, 496-3/4, 497, and 497-3/4 hyaline filter bowls — covers the complete iFJF fuel tank filter lineup. Compatibility Filter Bowl Model Bowl Material Compatible 495-4 Fuel Filter Bowl Hyaline Polymer ✅ Yes 495-3/4 Filter Bowl Hyaline Polymer ✅ Yes 496 Fuel Filter Assembly Hyaline Polymer Bowl ✅ Yes 496-3/4 Filter Assembly Hyaline Polymer Bowl ✅ Yes 497 Fuel Filter Assembly Hyaline Polymer Bowl ✅ Yes 497-3/4 Filter Assembly Hyaline Polymer Bowl ✅ Yes Specifications Specification Value Part Number 491 / B10-AL Inner Diameter 3.35" (85mm) Material Stamped Steel, Corrosion-Resistant Finish Drive Size 1/2" Square Drive + Hex Head Hex Size 24mm Fits Bowl Models 495-4, 495-3/4, 496, 496-3/4, 497, 497-3/4 Why You Need This Wrench If you've ever tried to remove a 495/496 fuel filter bowl with a strap wrench, you know the frustration — it slips, it scratches, and you end up overtightening it on reinstallation just to get a seal. The 491 wrench eliminates that. It engages the bowl's designed flats, giving you positive control for both removal and installation. No more cracked bowls. No more fuel drips. Just a clean, secure seal every time. Related Products You May Need Replacement 495-4 Hyaline Filter Bowl 496 Fuel Filter Assembly — Complete Kit 496-5 Replacement Filter Element (30 Micron) Frequently Asked Questions Q: Will this fit my 495-4 fuel filter bowl?A: Yes, it's specifically designed for the 495-4 and all 495/496/497 series hyaline bowls. The 3.35" inner diameter mates with the wrench flats on the bowl body. Q: Can I use a regular oil filter wrench instead?A: We strongly recommend against it. Strap wrenches and jaw-type filter wrenches apply uneven point pressure that can crack the hyaline bowl. The 491 wrench contacts only the designed flats and distributes force evenly. Q: What drive size does it use?A: It has a 1/2" square drive in the center, plus a 24mm hex head on the outside for use with a standard socket or wrench — gives you two ways to turn it depending on your clearance. Q: How tight should I torque the bowl?A: Hand-tighten until the bowl gasket seats, then add about 1/8-1/4 turn with the wrench. The bowl seals on the gasket, not on thread torque. Overtightening is the #1 cause of cracked 495/496 bowls. Q: Does this work with the 496-5 filter element replacement?A: Yes. When replacing the 496-5 filter element, you'll need to remove the bowl — this wrench makes that job quick and damage-free.

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Fuel Filter Head Assembly for 2005-2013 Duramax 6.6L LLY/LBZ/LMM — with Billet Bleeder Screw Upgrade Any Duramax owner who's fought with a seized bleeder screw knows the frustration — that plastic factory screw welds itself into the filter head, and one wrong twist with a screwdriver rounds off the slots, leaving you unable to bleed air from the fuel system after a filter change. This replacement fuel filter head assembly solves that problem permanently. It includes a CNC-machined billet aluminum bleeder screw that won't strip, won't seize, and gives you positive control every time you service your fuel filter. Complete with a new hand primer pump and all mounting provisions, it's the upgrade your Duramax deserves. Key Features Billet Aluminum Bleeder Screw: CNC-machined from 6061-T6 aluminum with a hex-head design — no more stripped plastic screw slots. Apply a wrench for positive bleed control during filter priming. New Hand Primer Pump: Includes a fresh diaphragm-style hand primer that produces firm, consistent pressure to push fuel through the new filter and purge air without excessive pumping. Complete Filter Head: Replaces the entire factory filter head assembly, including the filter mounting thread boss, WIF sensor port, fuel inlet/outlet ports, and heater element provision — not just a partial rebuild kit. Direct Bolt-On Fit: All mounting points match the factory bracket on 2005-2013 Silverado and Sierra 2500HD/3500HD trucks. Remove the old head, transfer your sensors, bolt this one on. Proper Fuel Routing: Internal passages are correctly sized to maintain factory fuel flow rates, preventing the restriction issues that plague some cheaper aftermarket filter heads. Vehicle Compatibility Make Model Years Engine Engine Code Chevrolet Silverado 2500HD/3500HD 2005-2013 6.6L Duramax Turbo Diesel LLY, LBZ, LMM GMC Sierra 2500HD/3500HD 2005-2013 6.6L Duramax Turbo Diesel LLY, LBZ, LMM Technical Specifications Specification Value Part Type Fuel Filter Head Assembly (Complete) Replaces OEM 12642623 (GM/ACDelco) Bleeder Screw Material 6061-T6 Billet Aluminum, CNC Machined Bleeder Screw Drive Hex Head (Wrench-Operated) Primer Pump Diaphragm-Type Hand Primer (Included) WIF Sensor Port Yes — Accepts Factory Sensor Fuel Heater Provision Yes — Compatible with Factory Heater Element Filter Thread Standard Duramax Spin-On Filter Thread Inlet/Outlet Size Matches Factory Fuel Line Fittings Why Upgrade Your Filter Head? The OEM Duramax filter head has two well-known weaknesses that this assembly addresses. First, the plastic bleeder screw: it's a Phillips/flathead combo that strips with alarming regularity. Once stripped, you can't effectively bleed the system, and many owners resort to cracking a fuel line fitting (which introduces its own risks). Second, the hand primer diaphragm hardens and loses effectiveness over time, making filter priming a tedious, multi-minute pumping ordeal. This assembly replaces both failure points with upgraded components while maintaining compatibility with all your factory sensors and heater. Installation Guide Disconnect both negative battery cables before starting — you'll be working near the alternator and starter wiring on the passenger side of the engine. Remove the inner fender liner for better access to the filter head mounting bolts — it adds 10 minutes to the job but saves an hour of frustration. Transfer the WIF sensor and fuel heater element from your old filter head to the new one. Inspect each O-ring and replace if they show any signs of flattening or cracking. Torque the filter head mounting bolts to 18 ft-lbs — the aluminum bracket threads will strip if over-torqued. Lubricate the new billet bleeder screw threads with a small amount of anti-seize compound before installation — this prevents galling and ensures smooth operation for years of filter changes. After installation, fill the new filter with clean diesel, install it on the head, and use the hand primer until firm resistance is felt. Open the bleeder screw, continue pumping until bubble-free fuel emerges, then close the bleeder and start. Frequently Asked Questions Q: Will this fit the 2001-2004 LB7 Duramax?A: No, the LB7 uses a different fuel filter head design with a different mounting pattern and port configuration. This assembly is designed for 2005-2013 LLY, LBZ, and LMM engines only. For 2011-2016 LML trucks, a different filter head is also required. Q: Does this include the fuel filter element?A: No, the fuel filter element is sold separately. This assembly accepts standard Duramax spin-on fuel filters (ACDelco TP3018, Wix 33960, or equivalent). We recommend replacing the filter whenever you replace the filter head. Q: The factory bleeder screw is completely stripped and I can't get it out. What now?A: If the bleeder screw is seized beyond removal, don't risk cracking the housing by forcing it — you're replacing the entire filter head anyway. Simply disconnect the fuel lines and remove the complete assembly. The old bleeder screw doesn't need to come out separately. Q: Can I still use my edge programmer or tuning with this filter head?A: Yes. This filter head is a mechanical component with no electronic interfaces. It has no effect on engine tuning, programmers, or emissions equipment. Fuel flow rates are maintained at factory specifications.

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Fuel Filter Assembly for 1992-2002 Chevy GMC 6.5L Diesel — Suburban, Silverado, Sierra, Tahoe, Yukon, Hummer H1 Looking for a fuel filter for your Chevy Suburban 6.5 diesel? Or maybe a GMC Sierra 2500 6.5 diesel fuel filter? This assembly fits them all. Whether you drive a 1994 K2500 work truck, a 1998 Suburban family hauler, a 1995 Tahoe, or a Hummer H1, this complete fuel filter assembly replaces your worn-out filter housing, heater, and filter element in one bolt-on job. OEM part number: 10226035. If your current filter housing is cracked, leaking fuel, has a failed heater connector, or the water-in-fuel sensor is malfunctioning — replacing the entire assembly is more reliable (and often cheaper in labor) than piecing together individual components. This kit includes the filter head, metal housing with integrated fuel heater, mounting bracket, water sensor port, and a fresh filter element — all pre-assembled and ready to bolt on. Why Replace the Whole Assembly? The GM 6.5L diesel's fuel filter housing is a known failure point on high-mileage trucks. The plastic OEM housings warp over time from engine heat, causing air intrusion and hard-starting issues. The fuel heater element can short out, and the threaded fittings can strip. A complete assembly swap solves all these problems at once — and this aftermarket unit uses a metal housing that outlasts the factory plastic design. ⓘ Fitment Note: This assembly fits 1992-2002 GM trucks and SUVs with the 6.5L V8 diesel (engine codes L49/L56/L57/L65). It also fits some 5.7L and 7.4L diesel/gas applications that used this filter style. Not compatible with 2001+ Duramax 6.6L (LB7/LLY/LBZ/LMM/LML/L5P) — those use a completely different filter system. Key Features All-in-One Kit — Filter head, metal housing, fuel heater with connector, water-in-fuel sensor port, mounting bracket, O-rings, and filter element — everything pre-assembled Metal Housing Construction — Far more durable than OEM plastic under sustained engine bay heat and vibration Integrated Fuel Heater — Prevents fuel gelling in cold weather; essential for winter operation in northern climates Water-in-Fuel Sensor Port — Retains factory WIF sensor functionality; compatible with original wiring connector 30-Micron Filtration Media — Cellulose/synthetic blend filter element traps contaminants before they reach the injection pump and injectors Pre-Threaded Mounting Points — Direct bolt-on — no drilling, tapping, or modifications needed Reusable Housing — When it's time for a filter change, just swap the TP1256 replacement element — no need to replace the entire assembly Complete Vehicle Compatibility Chevrolet Model Years Engine Notes Blazer (Full-Size K5) 1992–1999 6.5L V8 Diesel K5 Blazer / Tahoe predecessor C1500 / Silverado 1500 1992–1999 6.5L V8 Diesel 2WD 1/2-ton pickup C1500 Suburban 1992–1999 6.5L V8 Diesel 2WD 1/2-ton SUV C2500 / Silverado 2500 1992–2000 6.5L V8 Diesel 2WD 3/4-ton pickup C2500 Suburban 1992–1999 6.5L V8 Diesel 2WD 3/4-ton SUV C3500 / Silverado 3500 1992–2002 6.5L V8 Diesel 2WD 1-ton pickup C3500HD 1992–2002 6.5L V8 Diesel 2WD heavy-duty chassis cab Express 1500/2500/3500 1996–2002 6.5L V8 Diesel Full-size van G20 / G30 1992–1996 6.5L V8 Diesel Predecessor to Express van K1500 / Silverado 1500 4WD 1992–1999 6.5L V8 Diesel 4WD 1/2-ton pickup K1500 Suburban 1992–1999 6.5L V8 Diesel 4WD 1/2-ton SUV K2500 / Silverado 2500 4WD 1992–2000 6.5L V8 Diesel 4WD 3/4-ton pickup K2500 Suburban 1992–1999 6.5L V8 Diesel 4WD 3/4-ton SUV K3500 / Silverado 3500 4WD 1992–2002 6.5L V8 Diesel 4WD 1-ton pickup P30 1992–1999 6.5L V8 Diesel Forward-control chassis (step van/motorhome) Tahoe (2-door & 4-door) 1995–1999 6.5L V8 Diesel Full-size SUV GMC Model Years Engine Notes C1500 / Sierra 1500 1992–1999 6.5L V8 Diesel 2WD 1/2-ton pickup C1500 Suburban 1992–1999 6.5L V8 Diesel 2WD 1/2-ton SUV C2500 / Sierra 2500 1992–2000 6.5L V8 Diesel 2WD 3/4-ton pickup C2500 Suburban 1992–1999 6.5L V8 Diesel 2WD 3/4-ton SUV C3500 / Sierra 3500 1992–2002 6.5L V8 Diesel 2WD 1-ton pickup C3500HD 1992–2002 6.5L V8 Diesel Heavy-duty chassis cab G2500 / G3500 1992–1996 6.5L V8 Diesel Full-size van K1500 / Sierra 1500 4WD 1992–1999 6.5L V8 Diesel 4WD 1/2-ton pickup K1500 Suburban 1992–1999 6.5L V8 Diesel 4WD 1/2-ton SUV K2500 / Sierra 2500 4WD 1992–2000 6.5L V8 Diesel 4WD 3/4-ton pickup K2500 Suburban 1992–1999 6.5L V8 Diesel 4WD 3/4-ton SUV K3500 / Sierra 3500 4WD 1992–2002 6.5L V8 Diesel 4WD 1-ton pickup P3500 1992–1999 6.5L V8 Diesel Forward-control chassis Savana 1500/2500/3500 1996–2002 6.5L V8 Diesel Full-size van Yukon (2-door & 4-door) 1992–1999 6.5L V8 Diesel Full-size SUV AM General Model Years Engine Hummer H1 1994–2001 6.5L V8 Turbo Diesel Cross-Reference Part Numbers GM OEM: 10226035, 10154635, 10183997, 25176756 Aftermarket: TP1256, BF1201, P550352, FS1295, PS7358 ACDelco: TP1256, 33376, 33976 WIX: 33379 NAPA: 3960 Other: 5742602, XF54719, F54719 Technical Specifications Specification Detail Filtration Rating 30 Micron (nominal) Filter Media Cellulose / synthetic blend Housing Material Metal (steel) with corrosion-resistant coating Fuel Heater Integrated 12V heating element with OEM-style connector WIF Sensor Port Compatible with factory water-in-fuel sensor Inlet/Outlet Size 3/8\" quick-connect (matches OEM) Filter Replacement Interval Every 10,000-15,000 miles Weight Approx. 2.6 lbs (1.17 kg) Installation Overview Relieve fuel system pressure and disconnect battery Disconnect fuel lines (quick-connect fittings) and WIF sensor connector Remove mounting bolts from old filter housing bracket Install new assembly — bolts directly to factory mounting points Reconnect fuel lines, WIF sensor, and heater connector Prime fuel system by cycling ignition key (ON for 10 seconds, OFF, repeat 3-4 times) Start engine and check for leaks at all connections ⚠️ Torque Warning: When tightening the filter cap onto the housing, hand-tighten firmly then add no more than 1/4 turn with a wrench. Over-tightening is the #1 cause of cap leaks and difficult future filter changes. The O-ring does the sealing — not raw torque. FAQ Q: Will this fit my 1994 Chevy K2500 with the 6.5L turbo diesel?A: Yes. This assembly directly fits all 1992-2002 GM C/K 1500, 2500, and 3500 series trucks with the 6.5L V8 diesel engine, including your 1994 K2500. Q: Does this include the filter element?A: Yes. The assembly comes with a filter element pre-installed. When it's time for your next filter change, you can purchase our replacement filter element (sold individually or in value packs of 3-pack and 6-pack). Q: My truck has a hard start and loses prime overnight. Will this fix it?A: Very likely yes. Air intrusion through a cracked filter housing or failed O-rings is one of the most common causes of hard starting and prime loss on the GM 6.5L diesel. Replacing the complete assembly with new seals and housing eliminates these leak paths. Also check your lift pump and fuel lines if the problem persists. Q: Is the fuel heater functional?A: Yes. The integrated 12V fuel heater uses the OEM-style connector and activates automatically in cold temperatures to prevent fuel gelling and improve cold-start performance. It's essential if you operate in winter conditions. Q: How does this compare to the OEM plastic housing?A: The original GM housing (ACDelco 10226035) is plastic and known to warp, crack, and leak over time — especially on high-mileage trucks. This aftermarket replacement uses a metal housing that's significantly more durable under sustained engine bay heat. It meets or exceeds OEM filtration specifications at a fraction of the dealer price. Q: Do I need to bleed the fuel system after installation?A: Yes. After installation, cycle the ignition key to the ON position (not START) for 10 seconds, then OFF for 5 seconds. Repeat 3-4 times. This runs the lift pump and purges air from the system. You should hear the pump pitch change when air is purged. Then start the engine and let it idle for 2-3 minutes while checking for leaks. Q: Will this fit my 2003 Duramax?A: No. This assembly is for the 6.5L diesel (1992-2002). Duramax 6.6L engines (2001+) use an entirely different filter system. Please check our Fuel Filter collection for Duramax-compatible options. Q: What's the difference between the filter element and the full assembly?A: TP1256 is the filter element (the replaceable cartridge with cap and gasket). 10226035 is the complete assembly — housing, heater, bracket, and filter element together. This product is the complete assembly. If you only need replacement filter elements, see our TP1256 filter element multipacks. 📦 Need Replacement Filters? Save on future filter changes with our TP1256 filter element value packs: Single TP1256 Filter Element — $22.99 3-Pack Value Bundle — Save 27%, $49.99 6-Pack Best Value — Save 36%, $87.99 ($14.67/filter) For full installation instructions, see our DIY fuel filter replacement guide with step-by-step video. 🔧 OEM Cross-Reference & Compatibility OEM Part Number Brand Notes 10226035 GM / ACDelco Original GM part number TP1015 ACDelco Direct replacement PF46108 Baldwin Premium aftermarket equivalent P553207 Donaldson Heavy-duty equivalent 33826 Wix Aftermarket equivalent FF5320 Fleetguard Cummins OEM equivalent Vehicles: 1992-2002 Chevy/GMC 6.5L Diesel — Blazer, Suburban, Tahoe, Yukon, C/K1500-3500. Also fits 6.5L turbo diesel van chassis.

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Product Overview The S3213 fuel water separator is your outboard motor's first line of defense against water-contaminated fuel — the #1 cause of on-water engine failure. This sealed one-piece spin-on filter uses 10-micron filtration media to trap water droplets, rust particles, and debris before they reach your Mercury, Yamaha, or other outboard engine. Standard 3/8" NPT inlet/outlet ports make it a direct bolt-on replacement for dozens of OEM and aftermarket part numbers. No adapters, no modifications — spin off the old filter, spin on the S3213, and you're protected. Key Features 10-Micron Filtration: Traps water and contaminants down to 10 microns — fine enough to catch the debris that clogs carburetors and injectors. 3/8" NPT Standard Ports: Fits the most common marine fuel system thread size. Direct fit for Mercury, Yamaha, Suzuki, and Honda outboard applications. Sealed One-Piece Design: No internal cartridge to service — replace the entire unit in minutes. Ideal for boaters who want a simple, no-fuss maintenance routine. Corrosion-Resistant Exterior: Coated canister built to withstand saltwater spray and humid bilge conditions season after season. Wide Cross-Reference: Replaces over 20 OEM and aftermarket part numbers across multiple marine brands (see fitment table below). Compatibility & Fitment Brand Part Numbers Replaced Mercury / Mariner 35-60494-1, 35-809097, 802893Q01, 35-807172 Sierra Marine 18-7928-1, 18-7932-1, 18-7922, 18-7919 Mallory 9-37801, 9-37802 Moeller / Tempo 033510-10, 035613-10 GLM Marine 24960, 24961 Wix Filters 33264, 33265 Universal Cross-Ref S3213, S3214, B32013, C14568 Fits most Mercury, Mariner, Yamaha, Suzuki, Honda, and Tohatsu outboard motors with 3/8" NPT fuel connections, 1990-present. Specifications Specification Value Filter Type Spin-On Fuel Water Separator Micron Rating 10 Micron Port Size 3/8" NPT (Inlet & Outlet) Canister OD 3.0" (76 mm) Canister Height 4.5" (114 mm) Replacement Interval 50-100 Hours or Annually Design Sealed One-Piece (Non-Serviceable) Why Choose This Filter Every S3213 we sell ships from US inventory — no 3-week overseas wait times. Each unit is individually sealed and pressure-tested before it leaves our warehouse. We stand behind our products with a 30-day satisfaction guarantee and responsive US-based support. Most orders placed before 2 PM ship same-day. Frequently Asked Questions Q: Does this filter have a water drain bowl? A: No — this is the sealed one-piece S3213 with no drain bowl. If you want a clear bowl for visual water checks, see our S3213 with Clear Bowl or the upgraded replaceable-element S3213 linked below. Q: What's the difference between S3213 and S3214? A: The S3213 has a 3.0" OD canister (~4.5" tall). The S3214 is a physically larger filter with a wider body. Both share the same 3/8" NPT threads and 10-micron rating. The S3213 is the most common fit for outboard applications. Q: How often should I replace this filter? A: Replace every 50-100 engine hours, or at minimum once per boating season. Replace immediately if you notice hard starting, engine surging, or visible water in your fuel system. Q: Does this fit my Mercury outboard? A: Yes — this directly replaces Mercury/Mariner part numbers 35-60494-1, 35-809097, and 802893Q01. Fits most 2-stroke and 4-stroke outboards from 1990-present with 3/8" NPT fuel connections. Q: Is this filter suitable for saltwater use? A: Absolutely. The corrosion-resistant exterior coating is specifically designed for saltwater marine environments. The filtration media is unaffected by humidity or salt air. Q: Can I use this on a diesel engine? A: This 10-micron filter is optimized for gasoline outboard applications. For diesel engines, we recommend a 2-micron water separator for finer filtration. Q: Do I need a separate mounting bracket? A: This filter spins onto your existing S3213 mounting bracket (3/8" NPT thread). If you need a replacement bracket, we stock those separately — see our 18-7853-1 bracket listing. 🔄 Upgrade Available: Replaceable Filter S3213 We now offer an upgraded S3213 with a replaceable filter element — lower long-term cost, less waste. Same 10-micron filtration, same 3/8" NPT fit. Upgraded S3213 ($27.99) → — Replaceable element, includes clear bowl Replacement Cartridge ($10.00) → — Single 10-micron filter element 3-Pack Cartridges ($19.00) → — Best value at $6.33 each

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For R12T Marine Fuel Filter/Water Separator complete assembly.NPT,ZG1/4-19.(Port/Connecting Size M18 X 1.5 Center Thread)(Include 2 fittings,2 plugs).Part Number:Replaces S3240 R12T 120AT;Replaces Sierra 18-7987;Replaces RK10222. Reusable clear nylon collection bowl and features a self-venting drain and plug for removing unwanted impurity and water. Tighten the valve,the water will not discharge.Release the valve,the water can be free to discharge. Benefits:Can work under high temperature and pressure.Reliability and durability. Package:1 x Nylon See-thru Collection Bowl with o-ring. R12T Fuel Filter Water Separator Complete Combo Kit →

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R12H Replacement Filter Element — Keep Your Marine Fuel System at Peak Performance This is the genuine iFJF R12H 10-micron replacement filter cartridge, designed exclusively for the R12H fuel water separator assembly. Unlike the older R12T (which forces you to replace the entire housing), the R12H system lets you swap only the filter element — saving you money every service while maintaining the same high-performance filtration. Key Features 10-Micron High-Capacity Filtration — Advanced filter media captures water and particles as small as 10 microns, ensuring clean, water-free fuel reaches your engine. Drop-In Replacement for R12H Assembly — Designed to fit the iFJF R12H aluminum housing perfectly. No modifications, no adapters needed. Cost-Effective Maintenance — Replace only the filter element, not the entire unit. A $13.99 cartridge vs. replacing a whole separator system. Marine & Diesel Ready — Built for the demands of saltwater marine environments, diesel trucks, generators, and fuel storage equipment. High Flow Design — Maintains 15 GPH flow rate when installed in the R12H assembly, ensuring consistent fuel delivery under load. Compatibility — Fits ONLY the iFJF R12H Assembly ⚠️ Important: This filter element is designed exclusively for the iFJF R12H fuel water separator housing. It replaces internal cartridges in assemblies that fit S3240, 120AT, 18-7987, and RK10222 form factors. ✅ Compatible with: iFJF R12H Fuel Water Separator Assembly ❌ NOT compatible with: Older R12T sealed units (the R12T cannot accept replacement cartridges) Specifications Product R12H Replacement Filter Element (1 Pack) Filtration Rating 10 Micron Compatible Assembly iFJF R12H Fuel Water Separator (Aluminum Housing) Replaces Part # S3240 · 120AT · 18-7987 · RK10222 (filter element only) Flow Rate 15 GPH (when installed in R12H assembly) Material High-efficiency cellulose/synthetic blend filter media Recommended Replacement Interval Every 100 hours of operation or annually When to Replace Your Filter Element 🔴 Engine hesitation or power loss under load 🔴 Visible water in the transparent collection bowl 🔴 More than 100 operating hours since last change 🔴 Annual preventive maintenance schedule 🔴 After any fuel contamination event Frequently Asked Questions Q: Will this fit the older R12T unit?A: No. The R12T is a sealed unit with a non-removable filter — you must upgrade to the R12H assembly to use replacement cartridges. This is why the R12H saves you money long-term. Q: How do I install the replacement element?A: 1) Shut off fuel supply. 2) Unscrew the R12H housing. 3) Remove old element (may require firm push). 4) Insert new element. 5) Lubricate O-rings with clean fuel. 6) Reassemble and fill with fuel before starting. Q: How many elements come in this package?A: This is a single (1-pack). We also offer a cost-saving 2-pack. Q: Do I have the R12H assembly?A: If your fuel water separator has a detachable aluminum housing with a replaceable internal cartridge, you have the R12H. Need the assembly? Shop here. Complete Your Fuel System 🛒 R12H Complete Assembly — The full aluminum housing + 3 elements combo 🛒 2-Pack Filter Elements — Save more with a twin pack 📖 See our 20K-view customer review: R12T vs R12H comparison & install guide → R12T Fuel Filter Water Separator Complete Combo Kit →

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GF652/FF5026 Professional Inline Fuel Filter for 1988-2006 GM Gas & Diesel Trucks and SUVs Your GM truck or SUV has been on the road for decades, and if the inline fuel filter hasn't been changed recently, you're asking the fuel pump to work against unnecessary restriction. A clogged filter reduces fuel volume to the engine, causing lean conditions, stumbling under acceleration, and eventually burning out the in-tank fuel pump from excessive load. This GF652/FF5026 inline fuel filter is the correct replacement for dozens of GM trucks, SUVs, and vans spanning nearly two decades of production. It's a simple, inexpensive maintenance item that protects your entire fuel delivery system. Key Features High-Efficiency Filtration Media: Multi-layer cellulose-synthetic blend captures contaminants down to 10 microns while maintaining full fuel flow — your engine gets clean fuel without restriction. Steel Canister Construction: Heavy-gauge steel body with anti-corrosion coating withstands road salt, under-chassis moisture, and gravel impacts far better than plastic-body alternatives. Universal GM Cross-Reference: Replaces GF652, FF5026, 33481, G3727, and dozens of other part numbers — verify your application, but this filter covers a massive range of GM vehicles. Barbed Inlet/Outlet: Standard 3/8" barbed fittings accept factory fuel line quick-connects or standard fuel injection hose clamps for secure, leak-free installation. Correct Burst & Collapse Ratings: Engineered to handle fuel injection system pressures (up to 100 PSI operating, 300+ PSI burst) without ballooning or collapsing, even when partially loaded with contaminants. Vehicle Compatibility Make Model Years Engine Types Chevrolet / GMC C/K 1500, 2500, 3500 1988-2000 4.3L V6, 5.0L V8, 5.7L V8, 7.4L V8, 6.5L Diesel Chevrolet Silverado 1500/2500/3500 1999-2006 4.3L, 4.8L, 5.3L, 6.0L, 8.1L Gas GMC Sierra 1500/2500/3500 1999-2006 4.3L, 4.8L, 5.3L, 6.0L, 8.1L Gas Chevrolet Suburban / Tahoe 1992-2006 5.7L, 5.3L, 6.0L, 8.1L Gas / 6.5L Diesel GMC Yukon / Yukon XL 1992-2006 5.7L, 5.3L, 6.0L, 8.1L Gas / 6.5L Diesel Cadillac Escalade 2002-2006 5.3L, 6.0L Gas Chevrolet Avalanche / Express / Astro / Blazer Various Various Gas Engines (Verify Fitment) Technical Specifications Specification Value Part Number GF652 / FF5026 Filter Type Inline Fuel Filter (Canister) Filtration Rating 10 Microns (Nominal) Body Material Steel with Anti-Corrosion Coating Inlet / Outlet Size 3/8" Barbed Fittings Operating Pressure Up to 100 PSI Burst Pressure >300 PSI Flow Direction Marked on Canister — Install Arrow Toward Engine Cross-Reference Numbers GF652, FF5026, 33481, G3727, GF481, and many others Why Regular Fuel Filter Changes Matter on Older GM Trucks On 1988-2006 GM trucks and SUVs, the inline fuel filter is located along the frame rail under the driver's side of the vehicle. It's exposed to road spray, salt, mud, and all the debris kicked up by the front tire. Over time, rust can perforate the canister, internal media can become saturated with water and debris, and the filter becomes a flow restriction instead of a protection device. A restricted filter forces the in-tank fuel pump to work harder (higher amperage draw, more heat, shorter life) and starves the engine under high-demand conditions like towing or passing. GM's recommended interval is every 30,000 miles, but many owners go 100,000+ without a change. If you don't know when yours was last replaced, it's time. Installation Guide Relieve fuel system pressure before disconnecting lines: remove the fuel pump relay or fuse, start the engine, and let it stall. On older trucks, depress the Schrader valve on the fuel rail to verify zero pressure. The filter is located on the driver's side frame rail, roughly under the driver's door area. It may be covered by a plastic or metal shield that needs to be unbolted first. Have a drain pan ready — even with pressure relieved, there will be residual fuel in the lines and old filter. Safety glasses are essential; fuel in the eyes is no joke. Note the flow direction arrow on the old filter before removal. The new filter MUST be installed with the arrow pointing toward the engine (direction of fuel flow). If your truck uses quick-disconnect fittings, use the proper GM fuel line disconnect tool (3/8" size). Do NOT use pliers or screwdrivers — you'll damage the retaining clips and potentially the fuel line itself. After installation, reinstall the fuel pump relay/fuse, cycle the key to "Run" 3-4 times (each cycle primes for ~2 seconds), then start and inspect both connections for leaks. Frequently Asked Questions Q: How do I know if this GF652 filter fits my specific truck?A: This filter fits the vast majority of 1988-2006 GM full-size trucks and SUVs with gasoline engines (and the 6.5L diesel). The easiest way to verify is to check if your old filter has GF652, FF5026, or 33481 stamped on it. If you're unsure, message us with your year, make, model, and engine size and we'll confirm compatibility. Q: Can I use this for a diesel application beyond the 6.5L?A: The GF652 is primarily designed for gasoline fuel injection systems and the 6.5L Detroit Diesel used in 1992-2000 GM trucks. It is NOT suitable for Duramax diesel engines (2001+) which use a different filter specification with water separation capability. Q: My truck has over 200,000 miles. Is it too late to start changing the fuel filter?A: It's never too late to start proper maintenance. However, if your filter has been neglected for an extended period, be aware that the fuel pump may have been working against a restricted filter for a long time. After installing a new filter, the reduced restriction may expose a weak fuel pump — if you notice pressure issues after the change, the pump (not the filter) was likely near end of life. Q: Does this filter work with E85 / flex-fuel vehicles?A: Yes. The filter media and canister construction are compatible with ethanol-blended fuels up to E85. However, vehicles running high-ethanol fuel may require more frequent filter changes, as ethanol can loosen deposits in older fuel tanks and fuel lines, causing the filter to load up faster than normal.

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CNC Billet Aluminum Fuel Filter Cap for 2017-2020 Duramax L5P — Replaces OEM 134001 The L5P Duramax is the most powerful diesel GM has ever put in a heavy-duty truck, pushing 445 horsepower and 910 lb-ft of torque. But its factory fuel filter cap — a plastic component subjected to heat cycles, vibration, and repeated filter changes — remains a weak link. Cracked caps cause fuel leaks, stripped threads mean you can't properly seal the filter housing, and a failed cap on the road can leave you stranded. This billet aluminum fuel filter cap is CNC-machined from solid 6061-T6 aluminum for a lifetime of filter changes without deformation, stripping, or cracking. Key Features 6061-T6 Billet Aluminum: Precision CNC-machined from a solid block of aerospace-grade aluminum, not cast, not molded — this cap maintains dimensional accuracy through extreme temperature cycling and years of filter changes. Anodized Finish: Hard-coat anodized surface resists corrosion from road salt, diesel fuel exposure, and under-hood chemicals — it won't pit, oxidize, or degrade like raw aluminum. Stripped-Thread Insurance: The factory plastic cap threads are notorious for cross-threading and stripping, especially during roadside filter changes. Precision-cut aluminum threads engage smoothly and stay true for the life of the cap. OEM Fitment: Designed as a direct replacement for GM part number 134001, the L5P's factory fuel filter cap. Same dimensions, same O-ring seal interface, zero modifications required. Hex-Drive Center: The machined hex recess accepts a standard socket or wrench for positive removal torque — no more struggling with a filter strap wrench in the tight engine bay. Vehicle Compatibility Make Model Years Engine Chevrolet Silverado 2500HD 2017-2020 6.6L Duramax L5P Turbo Diesel Chevrolet Silverado 3500HD 2017-2020 6.6L Duramax L5P Turbo Diesel GMC Sierra 2500HD 2017-2020 6.6L Duramax L5P Turbo Diesel GMC Sierra 3500HD 2017-2020 6.6L Duramax L5P Turbo Diesel Technical Specifications Specification Value Part Type Fuel Filter Housing Cap Material 6061-T6 Billet Aluminum Manufacturing Process CNC Machined (Not Cast or Molded) Finish Hard-Coat Anodized (Corrosion Resistant) Replaces OEM 134001 (GM/ACDelco) Thread Type Precision-Cut Aluminum, OEM Profile Drive Style Machined Hex Recess (Socket-Compatible) Application Under-Hood Fuel Filter Housing (Engine-Mounted) Weight Approximately 0.45 lbs (Significantly Heavier than Plastic OEM) Why Replace Your Plastic Factory Cap? The OEM plastic fuel filter cap on the L5P is adequate when new, but repeated heat cycling (from -20°F winter starts to 220°F+ under-hood temps during heavy towing) causes the nylon material to degrade. The threads gradually lose their crisp profile, making each filter change harder than the last. Eventually, the cap either won't tighten to a proper seal (causing a fuel leak and loss of prime) or the drive recess rounds out, trapping a stuck cap on the housing. This billet aluminum replacement eliminates all three failure modes. It's a one-time upgrade that pays for itself the first time you avoid a roadside filter change nightmare. Installation & Maintenance This cap is a direct swap — remove the factory plastic cap, transfer the O-ring (or install a new one — recommended), and thread on the billet aluminum cap. Apply a thin film of clean diesel fuel or silicone-based O-ring lubricant to the seal before installation — this ensures a smooth seal and prevents O-ring pinching. Hand-tighten until the O-ring contacts the sealing surface, then snug with a socket — the aluminum-to-plastic thread interface doesn't require extreme torque. Snug is sufficient. After installation, cycle the ignition to prime the system (the L5P's electric lift pump handles this automatically) and inspect for any seepage. During future filter changes, the aluminum threads will remain true and smooth — no galling, no binding, just consistent, reliable operation. Frequently Asked Questions Q: Will this cap fit the 2020+ L5P trucks with the 10-speed Allison?A: Yes. The fuel filter housing design carried over unchanged for all L5P-equipped trucks through the 2020 model year. If your truck is a 2017, 2018, 2019, or 2020 Silverado HD or Sierra HD with the 6.6L L5P, this cap fits. Q: Do I need a special O-ring with this aluminum cap?A: No, the cap is designed to use the standard OEM-specification O-ring that comes with your L5P fuel filter (ACDelco TP1018 or equivalent). We strongly recommend replacing the O-ring with each filter change — never reuse an old O-ring regardless of cap material. Q: Won't the aluminum cap corrode against the factory plastic housing?A: No. Aluminum and nylon composite are galvanically compatible — there's no dissimilar-metal corrosion concern. The anodized finish provides an additional barrier, and the O-ring seal prevents direct metal-to-plastic contact at the sealing surface. Q: Is this cap compatible with the passenger-side frame-rail filter on the L5P?A: No. The L5P has two fuel filters — the engine-mounted filter (driver's side, under the hood) and the chassis-mounted filter (passenger side, frame rail). This cap is specifically for the under-hood engine-mounted filter housing. The frame-rail filter uses a different cap design. 🔧 OEM Cross-Reference & Compatibility OEM Part Number Brand Notes 134001 GM / ACDelco Original GM fuel filter cap Fitment: 2017-2020 Chevy Silverado / GMC Sierra 2500HD 3500HD 6.6L Duramax L5P. Replaces the plastic factory cap prone to cracking and stripping. CNC-machined billet aluminum construction with upgraded O-ring seal. Common failure: Factory plastic cap cracks from overtightening, causing air leaks in the fuel system — symptoms include hard starting, rough idle, and P0087 low fuel rail pressure code.

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Diesel Urea (DEF) Filter — U58/9KIT The iFJF U58/9KIT urea filter is a direct OEM-quality replacement for Mercedes-Benz and Detroit Diesel SCR (Selective Catalytic Reduction) systems. This critical filter protects your diesel engine's emission control system by removing debris and crystallized urea particles from the DEF fluid before it reaches the dosing injector. A clogged or failed urea filter leads to SCR system faults, derate, and costly repairs. Key Features Direct OEM Replacement: Exact fit for Mercedes-Benz part A0001421089, 2265672, 2655824, 1421089, UF106 High-Efficiency Filtration: Captures crystallized urea particles and debris down to 10 microns Corrosion-Resistant Materials: Stainless steel mesh and urea-compatible polymer construction Prevents SCR Failure: Clean DEF fluid = longer dosing injector life and reduced DEF pump wear Easy Service: Direct replacement — no modifications needed, typically a 15-minute service Compatibility Table Make Engine/Application OEM Part Mercedes-Benz BlueTEC Diesel (OM642, OM651) A0001421089 Detroit Diesel DD13, DD15, DD16 (2010+) A0001421089 Freightliner Cascadia with DD13/DD15 A0001421089 Western Star 4900, 5700XE with DD engines A0001421089 Cross References Brand Part Number Mercedes-Benz A0001421089, 0001421089 Detroit Diesel 2265672, 23536524 Freightliner 2655824 Fleetguard UF106 Why Choose iFJF U58/9KIT? Prevent Costly Downtime: A failed SCR system triggers engine derate — this $20 filter protects a $5,000+ aftertreatment system ISO Certified: Manufactured to ISO 22241 standards for diesel exhaust fluid handling 60%+ Savings: Versus OEM dealer pricing with identical quality and fitment FAQ Q: How often should the DEF/urea filter be replaced?A> Replace every 100,000 miles or every 2 years, whichever comes first. For vocational trucks in dusty environments, replace annually. Always follow your OEM maintenance schedule. Q: What are signs of a clogged urea filter?A: Check engine light with SCR-related fault codes (P20E8-P20EE range), reduced engine power/derate mode, DEF quality warnings on dash, or visible contamination in the DEF tank. Q: Can I clean and reuse this filter?A: No. Urea filters are single-use items. Attempting to clean with water will damage the filter media — DEF fluid is 67.5% deionized water and the filter materials are designed for urea only. Q: Does this work with aftermarket DEF fluid brands?A: Yes. The U58/9KIT is compatible with all ISO 22241-certified DEF fluids regardless of brand (BlueDEF, Peak, Valvoline, etc.).

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iFJF TP1015 Fuel Filter — 5-Micron Absolute Protection for Your Duramax L5P Already running an upgraded billet aluminum housing cap? Excellent choice. Now keep it fed with the iFJF TP1015 replacement fuel filter element — the same 5-micron absolute-rated filter that ships in our combo kits, sold standalone for customers who already made the cap upgrade. Same filtration. Same Viton O-rings. Same CP4.2 pump protection. Just the filter, no cap included. Engineered for 2017–2020 Chevy Silverado & GMC Sierra 2500HD/3500HD with the 6.6L L5P Duramax diesel engine, the TP1015 delivers filtration performance that leaves the OEM ACDelco paper element in the dust — literally. If your current filter has 15,000+ miles on it, you're overdue. 📊 TP1015 vs. OEM ACDelco Filter Element Specification iFJF TP1015 OEM ACDelco TP1015 Micron Rating 5 Micron (Absolute) 7–10 Micron (Nominal) Filter Media Multi-Layer Synthetic Blend Cellulose Paper Water Separation 98% Efficiency ~95% Efficiency O-Ring Material 2 × Viton® (Diesel-Rated, 400°F) 1 × Standard Nitrile Dirt-Holding Capacity 2× OEM Capacity Baseline Price $17.99 $29–$42 🚛 Compatible Vehicles Chevrolet Silverado 2500HD / 3500HD 2017 · 2018 · 2019 · 2020 6.6L L5P Duramax Turbo Diesel V8 GMC Sierra 2500HD / 3500HD 2017 · 2018 · 2019 · 2020 6.6L L5P Duramax Turbo Diesel V8 Also Fits: Chevy Cruze 2.0L Diesel (2014–2015), Chevy Cruze 1.6L Diesel (2017–2019) 🔢 Cross-Reference / Replaces OEM Part Numbers iFJF: TP1015 ACDelco: TP1015 · 22937279 GM Genuine: 23456595 · 23304096 ⚙️ Technical Specifications Filter Media: Multi-layer synthetic blend with hydrophobic barrier layer — traps particles down to 5μm while repelling water droplets from the fuel stream Filtration Rating: 5 micron absolute (β≥1000) — captures 99.9% of particles ≥5μm. OEM paper filters are rated nominally at 7–10μm, meaning they let significantly more particulate through to your CP4.2 high-pressure pump Water Separation: 98% removal efficiency — the hydrophobic layer strips emulsified water from diesel fuel, critical for protecting the CP4.2 injection pump from cavitation erosion and catastrophic failure O-Rings: 2 premium Viton® fluoroelastomer O-rings (1 × large cap seal, 1 × small filter seal) — rated to 400°F continuous, compatible with ULSD, B20 biodiesel, and common diesel fuel additives Service Interval: Replace every 15,000–22,500 miles (24,000–36,000 km). Reduce to 15,000 miles if towing heavy, extended idling, or running biodiesel blends Filter Construction: Spiral-wound pleated media with epoxy-sealed end caps — no bypass valve failures, consistent flow under high fuel demand 📦 What's in the Box 1 × TP1015 Fuel Filter Element (multi-layer synthetic blend media, 5μm absolute) 2 × Viton® O-rings (large cap seal + small filter seal) 1 × Installation instruction card ⚠️ Housing cap NOT included — this is the filter element only. If you need a cap upgrade, see our Silver Cap Kit or Black Cap Kit. 🛠️ Installation Tips PRIME THE FILTER: Fill the new filter with clean diesel before installing. A dry filter means a dry CP4.2 on first start — and that can lead to a $4,000+ pump replacement. LUBE THE O-RINGS: Apply a thin film of clean diesel or silicone grease to both O-rings. Dry O-rings can pinch, tear, or roll during installation — all of which cause air leaks and hard-start conditions. TORQUE TO SPEC: If you're using the OEM plastic cap, torque to 18 ft-lbs (25 N·m) — no more. If you're using an iFJF billet aluminum cap, the same torque spec applies, but the aluminum cap won't crack if you go slightly over. BLEED THE SYSTEM: After installation, cycle the key to "ON" (without cranking) 3–5 times. You'll hear the in-tank lift pump cycle. The L5P fuel system is self-priming — no manual bleeding required. LEAK CHECK: Start the engine and inspect the filter housing area. Any dampness around the cap seal means the O-ring isn't seated. Shut down, reseat, and retorque. ❓ FAQ Q: Will this fit my 2017–2020 Duramax L5P? A: Yes — as long as your truck uses the cartridge-style fuel filter housing (GM part #134001 housing). This filter fits all 2017–2020 Silverado/Sierra 2500HD/3500HD with the 6.6L L5P engine. Also fits Chevy Cruze 1.6L/2.0L diesel models. Q: How often should I replace the fuel filter? A: GM recommends every 22,500 miles. We recommend every 15,000 miles if you tow heavy, idle frequently, or run any biodiesel blends. The TP1015 has 2× the dirt-holding capacity of the OEM filter, but diesel fuel quality varies — err on the side of more frequent changes. Q: Can I use this TP1015 filter with the OEM plastic cap? A: Yes, the TP1015 filter element is a direct dimensional match for the OEM housing. However, the factory plastic cap is a known failure point (GM TSB #18-NA-103). We strongly recommend upgrading to our 6061-T6 billet aluminum cap for permanent peace of mind. Q: Will using this aftermarket filter void my factory warranty? A: No. Under the Magnuson-Moss Warranty Act (15 U.S.C. § 2302), a manufacturer cannot void your warranty for using aftermarket parts unless they prove the aftermarket part directly caused the failure. The iFJF TP1015 meets or exceeds all OEM filtration specifications — GM would have a very hard time making that case. 🛒 Complete Your Fuel System Upgrade This filter is just one piece of the L5P fuel system puzzle: Need the billet cap? Silver 134001 Cap + TP1015 Kit — $69.99, includes filter + CNC 6061-T6 cap Prefer stealth black? Black 134001 Cap + TP1015 Kit — $69.99, same premium kit in black anodized finish Due for an air filter too? TP1015 + A3231C Air Filter Combo — $37.99, both filters in one order Just need the air filter? A3231C Air Filter — $29.99, high-flow drop-in replacement for 2017–2019 L5P ⚠️ IMPORTANT: Always prime the fuel filter with clean diesel before installation. A dry-start on the CP4.2 high-pressure fuel pump can cause catastrophic failure — a $4,000+ repair you don't want. 🔗 L5P Duramax Resources 📖 Installation Guide: L5P Fuel Filter Housing Cap Replacement — Complete DIY Guide (2017–2020) — step-by-step, torque specs, CP4.2 protection. 🛒 134001 Billet Aluminum Fuel Filter Housing Cap (Silver) — CNC 6061-T6, lifetime upgrade, standalone cap 🛒 TP1015 Filter + 134001 Silver Cap Kit — complete kit: billet cap + filter + O-rings, $69.99 🛒 TP1015 Filter + 134001 Black Cap Kit — same kit, stealth black anodized finish 🛒 A3231C Air Filter for L5P Duramax — high-flow replacement for 2017–2019 Silverado/Sierra 2500HD 3500HD 🛒 TP1015 Fuel Filter + A3231C Air Filter Combo — save on both filters for your L5P 🔍 Shop All Duramax 6.6L Parts → 🔍 Browse All Fuel Filters →

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HFCM Fuel Pump Wiring Harness for 2003-2007 Ford 6.0L Powerstroke The HFCM (Horizontal Fuel Conditioning Module) wiring harness is the electrical lifeline of your 6.0L Powerstroke's fuel delivery system. Mounted on the driver's side frame rail, it connects the frame-mounted HFCM fuel pump assembly to the vehicle's main electrical system — supplying power to the fuel pump and fuel heater element. When this harness fails — and it does, often — your truck experiences intermittent no-starts, sudden stalling, or a complete loss of fuel pressure with zero warning. Rated 4.5 stars with 140+ reviews and carrying the Amazon's Choice badge in the Wiring Harnesses category, this is the go-to replacement for 6.0L Powerstroke owners tired of chasing electrical gremlins. Each harness is built with heavy-duty fluoroelastomer (Viton) seals — the same material used in OEM diesel fuel system O-rings — ensuring long-term resistance to diesel fuel, road salt, and extreme under-chassis temperatures. Key Features Direct OEM Replacement — Manufactured to Ford 6C3Z-9F759-A (6C3Z9F759A) specifications. Identical connector shells, pin count, wire gauge, and circuit routing. Plugs directly into the factory chassis harness and HFCM pump with zero modifications. Heavy-Duty Fluoroelastomer Seals — All connector seals are made from genuine Viton fluoroelastomer, not cheap nitrile rubber. Viton withstands continuous exposure to diesel fuel, road salt brine, and under-chassis temperatures up to 400°F without hardening or cracking — the #1 cause of connector seal failure on budget harnesses. Bridge Harness Design — New aftermarket HFCM fuel pumps often use updated connector styles that are incompatible with the original 2003-2007 factory wiring harness (different plug shape, different pinouts). This harness acts as a jumper, bridging the gap between your factory chassis harness and the new pump — without replacing the entire HFCM assembly. Complete Plug-and-Play Kit — Includes the HFCM pump connector, fuel heater connector, and main chassis harness connector — all pre-assembled and ready to install. No wire cutting, no soldering, no crimping. Simply unplug the old, plug in the new. OEM-Grade Wire & Color Coding — Uses the same AWG copper wire gauge and factory color coding as the Ford harness for straightforward pin-by-pin verification during installation and troubleshooting. Weather-Sealed Throughout — Every connector features silicone rubber environmental seals and terminal position assurance (TPA) locks. Keeps moisture, salt spray, and road grime out of the electrical contacts — the root cause of most HFCM harness failures. Vehicle Compatibility Year Make Model Engine Notes 2003-2007 Ford F-250 Super Duty 6.0L Powerstroke V8 Turbo Diesel All cab configurations 2003-2007 Ford F-350 Super Duty 6.0L Powerstroke V8 Turbo Diesel Single & dual rear wheel 2003-2007 Ford F-450 Super Duty 6.0L Powerstroke V8 Turbo Diesel Chassis cab included 2003-2007 Ford F-550 Super Duty 6.0L Powerstroke V8 Turbo Diesel Chassis cab included 2003-2005 Ford Excursion 6.0L Powerstroke V8 Turbo Diesel All trim levels Important: This harness connects the frame-mounted HFCM pump only (driver side frame rail, under the cab). It is NOT the engine-mounted fuel injector harness, NOT the in-tank sending unit harness, and NOT the FICM harness. If you need those, check our 6.0L Powerstroke collection. Technical Specifications Specification Detail OEM Part Number 6C3Z-9F759-A, 6C3Z9F759A Connector Seal Material Viton Fluoroelastomer (Fuel & Heat Resistant to 400°F) Wire Gauge 14-18 AWG — Matches OEM Ford Specification Circuit Coverage Fuel Pump Power (12V), Fuel Heater, Ground Connector Type Weather-Sealed Multi-Pin (OEM-Spec Shell) Installation Type Frame-Mount, Plug-and-Play — No Splicing Required Kit Contents 1x Complete HFCM Wiring Harness Assembly Amazon Rating 4.5 ★ (140+ Reviews) — Amazon's Choice Symptoms of a Failing HFCM Wiring Harness The 6.0L HFCM harness doesn't usually fail all at once. It degrades gradually, causing increasingly frustrating symptoms that are often misdiagnosed as a bad fuel pump. Here's what to watch for: Intermittent No-Start — The Classic Sign — Engine cranks strong but won't fire. No fuel pump hum when the key is turned to ON. Then 20 minutes later it starts like nothing happened. This is the #1 symptom of a failing HFCM harness — heat cycling causes the corroded connector to lose contact, and cooling down temporarily restores it. Sudden Stalling While Driving — Truck dies without warning at highway speed. Restarts after cooling down or after wiggling the HFCM connector. Dangerous and unpredictable — do not ignore this. P0231 / P0232 Diagnostic Trouble Codes — Fuel pump secondary circuit low voltage (P0231) or high voltage (P0232). These codes point directly to a wiring or connector issue at the HFCM pump, not the pump itself. Fuel Pump Runs Intermittently — You hear the pump prime sometimes but not others when cycling the key. Classic loose connection or high-resistance contact. Visible Corrosion on Connector Pins — Green, white, or blue crust on the HFCM connector terminals. Once corrosion is visible on the outside, it has almost certainly traveled up the wire strands inside the insulation. The connector is compromised. Fuel Pressure Drops Under Load — Truck runs fine at idle but falls on its face during acceleration or towing. Corroded connections create voltage drop at the pump, reducing fuel pressure when demand is highest. How to Diagnose Harness vs. Pump Failure Before replacing any parts, do this simple 2-minute diagnostic to avoid throwing money at the wrong component: Test for 12V at the HFCM connector during the key-on prime cycle (first 2 seconds after turning the key to ON, before cranking). Use a multimeter or test light at the pump power and ground pins. If 12V is present but the pump doesn't run → the pump itself is bad. Replace the HFCM pump. If voltage is absent or intermittent → the harness, relay, or fuse is at fault. Wiggle the harness connector while your meter is connected — if voltage cuts in and out, the harness is the culprit. Replace this harness. Inspect the connector pins closely — look for green corrosion, melted plastic around the terminals (sign of overheating from high resistance), or loose female pins that have lost their spring tension. Pro tip: Many shops misdiagnose this as a fuel pump failure because they test at the relay (which shows good voltage) but never test at the pump connector itself. The voltage drop happens in the corroded harness between the relay and the pump. Always test at the pump connector before condemning the pump. Installation Guide Difficulty: Beginner to Intermediate | Time: 15-30 Minutes | Tools: 8mm & 10mm sockets, flathead screwdriver, dielectric grease (recommended) Safety First — Disconnect both battery negative terminals. The HFCM circuit is live even with the key off on some 6.0L models. Locate the HFCM — Crawl under the driver's side of the truck, just behind the front door. The HFCM is a black module mounted on the inside of the frame rail with two wiring connectors and two fuel lines attached. Disconnect the Old Harness — Depress the locking tab on each connector and pull straight out. If the connector body is brittle (common), it may crack — use needle-nose pliers to remove any broken plastic pieces from the pump and chassis ports. Inspect the Ports — Before installing the new harness, inspect both the pump and chassis connector ports for debris, corrosion, or bent pins. Clean with electrical contact cleaner if needed. Apply Dielectric Grease — Apply a thin coat of dielectric grease to the new harness connector seals. This prevents moisture intrusion and makes future disconnection easier. Plug In the New Harness — Connect the chassis side first, then the pump side. Push each connector in until you hear an audible click from the locking tab. Give each connector a gentle tug to confirm it's locked. Secure the Harness — Route the harness along the same path as the original, using the factory mounting clips. Avoid routing near exhaust components or sharp frame edges. Reconnect Batteries & Test — Reconnect both batteries. Turn the key to ON (do not crank) and listen for the fuel pump priming hum. It should run for approximately 2 seconds and then stop. Cycle the key 3-5 times to purge any air introduced during installation, then start the engine and check for proper operation. Why This Harness Fails on the 6.0L Powerstroke The 2003-2007 6.0L Powerstroke HFCM harness is a known weak point for three reasons: Location, Location, Location — The HFCM is mounted on the frame rail, inches from the road surface. It catches everything: water, salt, mud, gravel, ice. In northern states that use road salt (MI, NY, OH, PA, MN, WI), harness failure is nearly guaranteed by 100,000 miles. Heat Cycling — The exhaust system runs near the frame rail. Repeated heating and cooling causes the connector plastic to expand and contract, loosening the terminal grip and creating tiny gaps where moisture enters and corrosion begins. Budget Harness Alternatives Fail Faster — Cheap replacement harnesses use nitrile rubber seals that harden and crack within 2-3 years of diesel fuel and salt exposure. Our Viton fluoroelastomer seals are the same material used in aerospace fuel systems — they stay flexible and seal-tight for the life of the vehicle. What Customers Say With 140+ ratings and a 4.5-star average on Amazon — plus the Amazon's Choice badge — this HFCM wiring harness has earned its reputation as the go-to fix for 6.0L Powerstroke fuel pump electrical issues. Here's what verified buyers are saying: Rating Review Title Verified ⭐⭐⭐⭐⭐ "Exact replacement for original" ✅ ⭐⭐⭐⭐⭐ "A perfect replacement" ✅ ⭐⭐⭐⭐⭐ "Perfect fit" ✅ ⭐⭐⭐⭐⭐ "Worked perfect" ✅ ⭐⭐⭐⭐⭐ "Good quality" ✅ ⭐⭐⭐⭐⭐ "Works fine for 6.0 Powerstroke" ✅ ⭐⭐⭐★★ "Works great" ✅ Common themes from buyers: "Exact fit, no modifications needed." "Fixed my intermittent no-start immediately." "Plug-and-play — took 15 minutes." "Quality matches OEM at a fraction of dealer price." Data sourced from Amazon product reviews for ASIN B081JMT3J2. Rating and review count updated as of 2026-07. Frequently Asked Questions Q: How do I know if it's the harness or the pump itself?A: Test for 12V at the HFCM pump connector pins during the key-on prime cycle. If you have 12V and the pump doesn't run, the pump is bad. If voltage is absent or drops when you wiggle the connector, the harness is bad. Most importantly — inspect the connector pins for green or white corrosion. If you see any, the harness is compromised regardless of what your meter says. Q: My new aftermarket HFCM pump has a different connector than the factory harness. Will this work?A: Yes — this is exactly what this harness is designed for. Many aftermarket 6.0L HFCM pumps use updated connector styles that don't match the original 2003-2007 factory plug. This harness acts as a bridge, adapting your factory chassis wiring to the new pump's connector without cutting or splicing a single wire. Q: Do I need to drop the fuel tank to replace this harness?A: No. The HFCM is mounted on the driver's side frame rail, under the cab — accessible from under the truck without dropping the tank or removing the bed. You'll need to crawl under the truck on the driver's side, just behind the front door. A creeper makes the job more comfortable but isn't required. Q: Can I just clean the old connector pins and re-use the harness?A: We don't recommend it. The corrosion you can see on the connector pins has almost certainly wicked up the copper wire strands inside the insulation — creating high resistance that you can't see. What looks like clean copper at the connector face may have 50+ ohms of resistance 6 inches up the wire. This causes voltage drop at the pump, reduced fuel pressure, and eventual total failure — usually at the worst possible moment. Replace the complete harness for a permanent fix. Q: Will this fix my P0231 or P0232 code?A: If the code is caused by a faulty harness or corroded connector (which it is in the majority of 6.0L cases), yes — replacing the harness will clear the circuit fault. After installation, clear the DTCs with a scan tool and perform a key-on test. If the code returns, check the fuel pump relay and fuse in the central junction box under the hood. Q: Is dielectric grease really necessary?A: It's not strictly required for the harness to work, but we strongly recommend it. A thin coat of dielectric grease on the connector seals creates a secondary moisture barrier that dramatically extends connector life — especially in salt-belt states. It takes 30 seconds and costs pennies. Do it.

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Ford 6.0L Powerstroke HFCM Fuel Manifold — Fix the Cracked Drain Plug The HFCM Fuel Manifold (6C3Z-9B249-A) is the direct replacement for the cracked, leaking fuel conditioning module manifold on 2003-2007 Ford 6.0L Powerstroke engines. If your HFCM drain plug won't seal or fuel is leaking from the module, this is the fix. Why HFCM Manifolds Fail The HFCM is mounted on the driver-side frame rail, exposed to road salt, water, and debris. The OEM manifold's water drain plug threads are the weak point — they corrode, strip, or crack over time. Once the threads are damaged, the drain plug won't seal, causing: Fuel leaks (fire hazard) Air intrusion (hard starting, rough idle) Water-in-fuel warning (false or real) Unable to drain water separator Specifications Part Number 6C3Z-9B249-A, HFCM Manifold Fitment 2003-2007 F-250, F-350, F-450, F-550 6.0L; 2003-2005 Excursion 6.0L Installation Bolts directly to HFCM housing — no modifications required Includes Manifold, drain plug, mounting gasket Related Parts You May Need HFCM Wiring Harness (6C3Z-9F759-A) — common failure, causes fuel pump shutoff FD-4616 Fuel Filter (2-pack) — always change filters when servicing the HFCM 6.0L HFCM Filter Cap — if the cap hex is rounded or cracked FAQ Q: How do I know if my HFCM manifold is bad? A: Look for fuel residue around the drain plug, a drain plug that won't tighten, or a persistent fuel smell from the driver-side frame rail area. Also, if you can't drain water from the HFCM because the plug won't open, the manifold threads are likely damaged. Q: Do I need to drop the fuel tank to replace the HFCM manifold? A: No — the HFCM is frame-mounted on the driver side, accessible from under the truck. Removal of the skid plate (4 bolts) is required. Total labor: 1-2 hours. Q: Can I just replace the drain plug instead of the whole manifold? A: If the threads in the manifold body are stripped or cracked, a new plug won't fix it. The manifold body is the problem. Replace it once, do it right.

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Fitment:FF63017NN and FS53029NN Fuel filter For 2016-2019 Nissan Titan XD 5.0L V8 Diesel Engines. Replace part number:Upper engine filter:4335493,4378483,16403EZ41A,FF63017NN,WF10442,PF46140.Frame rail filter:4360105,4335492,16403EZ40A,FS53029NN,WF10441. Feature:Prevents fuel problems and helps prolong the life of your engines fuel injection system.Provide high flow rates and superior filtration efficiency with a premium filtration media to help improve engine performance.High dirt holding capacity of filter elements through high filter surface area. Package includes:1 x FF63017NN fuel filter(7 Micron),1 x FS53029NN fuel filter(12 Micron),2 x O-rings. Warm Hint:Please replace the filters regularly to keep the engine in good condition.

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