Duramax 6.6L Parts

Product Overview The TP3018 is a complete fuel filter housing assembly designed as a direct replacement for Diesel 6.6L diesel engines (2005-2013, 2005-2007). This all-in-one unit includes the filter housing, cap, and filter element — everything you need for a complete fuel system service. Engineered to exact OEM specifications for perfect fit and reliable performance. Key Features Complete Assembly — Includes housing, cap, and filter element in one ready-to-install unit OEM-Grade Materials — Heavy-duty polymer/fuel-resistant construction with precision-machined threads Integrated Water Separation — Advanced coalescing design removes water from diesel fuel Direct Drop-In Replacement — No modifications, no adapters needed — bolts directly to factory mounting points Pre-Assembled & Tested — Factory assembled and leak-tested for out-of-the-box reliability Compatibility Make Engine Years Diesel 6.6L 2005-2013, 2005-2007 Specifications Spec Value Type Fuel Filter Housing Assembly Brand iFJF Includes Housing + Cap + Filter Element Why iFJF? ✅ ISO-certified manufacturing ✅ Same quality as OEM at 30-50% less ✅ Fast US fulfillment ✅ 30-day guarantee Frequently Asked Questions Q: Does this include the filter element?A: Yes, this is a complete assembly including housing, cap, and pre-installed filter element. Q: Is this a direct bolt-on replacement?A: Yes, designed as a direct drop-in replacement — uses factory mounting points with no modifications required. Q: How often should the filter element be replaced?A: Replace the filter element every 15,000-30,000 miles or as specified in your vehicle's maintenance schedule. Q: Do you sell replacement filter elements separately?A: Yes, browse our Fuel Filter collection for individual replacement elements. Q: Will this fix fuel system warning lights?A: A restricted filter can trigger low fuel pressure codes. If your code persists after replacement, have the system professionally diagnosed. Related Categories Fuel Filter Filter Duramax 6.6L Parts

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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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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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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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Upgrade Your Duramax L5P Fuel System — TP1015 Filter & 6061-T6 Billet Aluminum Housing Cap Engineered for 2017–2020 Chevy Silverado & GMC Sierra 2500HD/3500HD equipped with the 6.6L L5P Duramax diesel engine, the iFJF TP1015 Fuel Filter & 134001 Housing Cap Combo Kit solves the two biggest pain points of L5P fuel system maintenance: factory plastic cap failures and subpar filtration. One kit. One install. Total peace of mind. 🔧 The Problem with OEM L5P Fuel Filter Caps The factory 134001 plastic housing cap on 2017–2020 Duramax L5P trucks is a known weak point. Overtighten it by even a quarter turn and the plastic cracks — leaving you with a fuel leak, a check engine light, and a $200+ tow to the nearest shop. GM TSB #18-NA-103 documents this exact issue. iFJF replaces that brittle plastic with a CNC-machined 6061-T6 billet aluminum cap — the same aerospace-grade alloy used in performance fuel systems. It won't crack. It won't warp. It won't leave you stranded. 📊 Why iFJF TP1015 vs. OEM Specification iFJF TP1015 OEM (ACDelco) Cap Material 6061-T6 Billet Aluminum Nylon Plastic Filter Micron Rating 5 Micron (Absolute) 7–10 Micron (Nominal) Water Separation 98% Efficiency ~95% Efficiency Filter Media Multi-Layer Synthetic Blend Cellulose Paper O-Ring Included ✅ 2 Premium Viton O-Rings ✅ 1 Standard O-Ring Drain Plug Anodized Aluminum (5 Color Options) Plastic (Non-Serviceable) Price (Filter + Cap) $69.99 $95–$130 (Filter + Cap separately) 🚛 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 Fuel Filter: TP1015 · 22937279 · 23456595 · 23304096 · ACDelco TP1015 Housing Cap: 134001 · ACDelco 134001 ⚙️ Technical Specifications Filter Media: Multi-layer synthetic blend with pleated cellulose core — superior dirt-holding capacity vs. OEM paper Filtration Rating: 5 micron absolute — captures 99.9% of particles ≥5μm (OEM paper elements typically rate 7–10μm nominal) Water Separation: Hydrophobic barrier layer achieves 98% water removal efficiency, protecting CP4.2 high-pressure fuel pump from water-induced cavitation damage Cap Material: CNC billet 6061-T6 aluminum with black anodized finish on Silver variant Cap Design: 32mm hex head for standard socket wrench — no special tools needed Drain Plug: Integrated anodized aluminum drain valve for easy water drainage during service intervals O-Rings: 2 premium Viton® fluoroelastomer O-rings (cap seal + filter seal) — rated to 400°F, diesel-resistant Service Interval: Replace every 15,000–22,500 miles (24,000–36,000 km) or per GM maintenance schedule Torque Spec: 25 ± 3 N·m (18 ± 2 ft-lbs) — no risk of cracking vs. plastic cap 🎨 Available Finishes — 5 Anodized Colors Choose the cap color that matches your build: 🔴 Red — Aggressive, race-inspired look 🟡 Gold — Premium, standout finish 🟢 Green — Subtle OEM+ appearance ⚪ Silver — Classic machined aluminum with black trim ⚫ Black — Stealth, factory-look finish 📦 What's in the Box 1 × TP1015 Fuel Filter (multi-layer synthetic blend media, 5μm) 1 × 134001 Housing Cap (CNC 6061-T6 billet aluminum) 1 × Anodized aluminum drain plug (pre-installed) 2 × Viton® O-rings (large cap seal + small filter seal) 1 × Installation instruction card 🛠️ Installation Tips PRIME THE FILTER: Fill the new filter with clean diesel before installing — this prevents the CP4.2 pump from running dry on first start. LUBE THE O-RINGS: Apply a thin film of clean diesel or silicone grease to both O-rings before installation. TORQUE TO SPEC: Hand-tighten, then torque to 18 ft-lbs (25 N·m). Threads engage smoothly — if you feel resistance, back off and realign. BLEED THE SYSTEM: After installation, cycle the key to "ON" (without starting) 3–5 times to prime the fuel system. The CP4.2 is self-priming — you'll hear the in-tank pump cycle. CHECK FOR LEAKS: Start the engine and inspect the cap area. No drips = good to go. ❓ FAQ Q: Will this fit my 2021+ L5P Duramax? A: No. GM changed the fuel filter housing design for 2021+ model years. This kit is specifically for 2017–2020 L5P trucks. For 2021+, use our updated L5P 2021+ filter kit. Q: How often should I replace the fuel filter? A: GM recommends every 22,500 miles under normal conditions. If you tow heavy, idle frequently, or run biodiesel blends, replace every 15,000 miles. Q: Can I reuse the aluminum cap with future filter changes? A: Yes! The 6061-T6 cap is a lifetime upgrade. Only the filter element and O-rings need replacement at each service interval. We sell replacement filter-only kits. Q: Does this void my warranty? A: No. Under the Magnuson-Moss Warranty Act, using aftermarket parts does not automatically void your warranty. The TP1015 meets or exceeds all OEM filtration specs. ⚠️ IMPORTANT: Always prime the fuel filter with clean diesel before installation. A dry-start CP4.2 high-pressure 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 Replacement Fuel Filter Element — 5-micron absolute, 98% water separation, $19.99 🛒 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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Fitment: Fuel Filter for Duramax 6.6L 2001-2016 Chevy Silverado/GMC Sierra 2500 HD Engine and more. Replaces part number: TP3018, TP3012, 19305685, 12664429, 12633243, 33960XE, LFF6012, BF46062, P550517, FF5501, F55464, PS9059B. Element: Multi-Layer Filter Media Design, Outer filter element 15 micron.Inner filter element 5 micron.Water separation efficiency is 98%. Feature: Protects your vehicle's fuel system from particles such as dirt, rust, and paint particles before they enter the fuel delivery system to improve engine's performance. Note: Please replace the fuel filter regularly and don’t reuse old ones.

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Fix Your Duramax Fuel Filter Head for $13.99 — Instead of $200+ for a New Housing If your Duramax is leaking fuel from the filter housing, the hand primer feels mushy, or the truck stalls shortly after startup, you don't need a $200+ replacement filter head. In most cases, the seals have simply hardened and the plastic bleeder screw has failed — both of which are fixed with this 6-piece rebuild kit + aluminum bleeder screw upgrade for less than fourteen bucks. What's in the Kit Part Material What It Fixes Aluminum Bleeder Screw ×1 Billet 6061-T6 Aluminum, Black Anodized Replaces fragile plastic bleeder that strips & cracks Plunger U-Cups ×2 Nitrile Rubber Restores primer pump pressure — no more "mushy" feel Viton O-Rings ×4 Viton (Fluorocarbon) Seals fuel & air pathways, stops leaks at the housing 🚛 Vehicle Compatibility Fits all 2001–2013 GM 6.6L Duramax fuel filter housings across these platforms: Chevrolet Silverado 2500HD/3500HD (2001–2013) GMC Sierra 2500HD/3500HD (2001–2013) Chevrolet Kodiak / GMC TopKick C4500–C8500 Engine codes: LB7 (2001–2004), LLY (2004.5–2005), LBZ (2006–2007), LMM (2007.5–2013) When You Need This Kit 🔧 Fuel Leak at the Filter Head — Fuel pooling near the bleeder screw or around the primer pump means the O-rings have hardened. This kit replaces all serviceable seals in one shot. 🔧 Soft or Non-Functional Hand Primer — If the primer won't build pressure after 10–15 pumps, the plunger U-cups are worn. These nitrile seals restore the vacuum needed to pull fuel from the tank. 🔧 Bleeder Screw Stripped or Cracked — The stock GM plastic bleeder screw is notorious for stripping threads and cracking. Our CNC-machined 6061-T6 aluminum bleeder is a lifetime upgrade — it won't strip, crack, or leave fragments inside the housing. 🛠️ Installation Tips Relieve fuel pressure before disconnecting any lines — loosen the bleeder screw first. Use a small pick tool to remove old O-rings without scratching sealing surfaces. Lubricate all seals with clean engine oil before installation to prevent pinching. The orange O-ring goes on the bleeder screw — don't mix it up with the Viton housing O-rings. The plunger U-cups install with the lip facing away from the flange for the outer seal, and toward the flange for the inner seal. After reassembly, test the primer before reinstalling on the truck — place your thumb over the inlet and pump until you feel vacuum. ❓ Frequently Asked Questions Q: Will this kit fit my LML (2011–2016) Duramax? This kit is designed for 2001–2013 filter heads (LB7 through LMM). The LML (2011–2016) uses a different filter housing design. For LML applications, check our Duramax collection for the correct kit. Q: Do I need to remove the entire filter head from the truck? Yes — the plunger U-cups and O-rings are installed inside the filter head housing, which requires the assembly to be on a workbench. The job takes about 45–60 minutes start to finish. Our step-by-step Duramax filter head rebuild guide walks you through every step. Q: The molded rubber seals inside my primer housing are leaking — does this kit include them? No — the molded seals inside the primer housing are not serviceable. If those have failed, you need a complete filter head replacement (ACDelco 12642623 or Dorman 904-401). Our rebuild kit addresses the 6 serviceable seals that cause 90%+ of filter head issues. Q: How is this aluminum bleeder screw better than the stock plastic one? The stock plastic bleeder screw strips threads easily, cracks from heat cycling, and can leave plastic fragments inside the fuel housing. Our billet 6061-T6 aluminum screw is CNC-machined, black anodized for corrosion resistance, and uses the same thread pitch as OEM — it's a direct drop-in replacement that will outlast the truck. Q: Do I need a new fuel filter after rebuilding the filter head? Yes. Once the filter head is opened to air, contaminants can enter. Install a fresh fuel filter (ACDelco TP3018 or equivalent) and prime the system fully before starting the engine. Browse our diesel fuel filter collection for compatible filters.

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Fitment:Fuel Filter for Duramax 6.6L 2001-2016 Chevy Silverado/GMC Sierra 2500 HD Engine and more. Replaces part number:TP3018,TP3012,19305685,12664429,12633243,33960XE,LFF6012,BF46062,P550517,FF5501,F55464,PS9059B. Element:Multi Layer Filter Media Design,Outer filter element 15 micron.Inner filter element 5 micron.Water separation efficiency 98%. Feature:Protects your vehicle's fuel system from particles such as dirt, rust, and paint particles before they enter the fuel delivery system to improve engine's performance. Package includes: 2 x TP3018 Fuel filters.

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iFJF TP1015 Fuel Filter & Black 134001 Billet Aluminum Cap — Stealth Upgrade for Duramax L5P Same aerospace-grade 6061-T6 billet aluminum cap. Same 5-micron TP1015 filter. Same CP4.2-saving filtration. The only difference from our Silver Cap kit? A deep black Type II anodized finish that disappears into your engine bay like it came from the factory that way. Built for the 2017–2020 Chevy Silverado & GMC Sierra 2500HD/3500HD with the 6.6L L5P Duramax diesel, this kit is for owners who want the bulletproof reliability of billet aluminum without the flash. The black anodized cap is understated, corrosion-proof, and will never crack — unlike the OEM nylon plastic cap that GM themselves have documented as a failure point. ⚫ Black vs. Silver — Same Cap, Different Vibe We offer the 134001 billet cap in five anodized colors. The Black finish is the choice for: Stealth / OEM+ builds — looks like it belongs there. Most techs won't notice it's not stock until they grab a socket. Dark engine bay aesthetics — matches factory black trim, hoses, and airbox. Corrosion resistance — Type II anodizing creates a hard aluminum oxide layer that won't flake, fade, or rust, even with road salt and diesel splash. Resale-conscious owners — looks stock enough that no buyer is going to question it, but the next owner will thank you. Prefer a brighter look? Check out our Silver Cap Kit — same internals, polished machined finish. 📊 iFJF Billet Cap vs. OEM Plastic Cap Specification iFJF 134001 (Black) OEM (ACDelco) Cap Material 6061-T6 Billet Aluminum Nylon Plastic Finish Black Type II Anodized Unfinished Black Plastic Hex Size 32mm — Standard Socket 32mm (Plastic) Torque Spec 25 ± 3 N·m (18 ± 2 ft-lbs) 25 N·m (prone to cracking) Crack Resistance ✅ Won't Crack. Won't Warp. ⚠️ Known Failure (TSB #18-NA-103) Drain Plug Black Anodized Aluminum Plastic (Non-Serviceable) Corrosion Resistance Type II Hard Anodized — Diesel + Salt Rated N/A (Plastic) Kit Price (Filter + Cap) $69.99 $95–$130 (Filter + Cap separately) 🚛 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 Fuel Filter: TP1015 · 22937279 · 23456595 · 23304096 · ACDelco TP1015 Housing Cap: 134001 · ACDelco 134001 ⚙️ Technical Specifications Filter Media: Multi-layer synthetic blend with pleated cellulose core — superior dirt-holding capacity vs. OEM paper Filtration Rating: 5 micron absolute — captures 99.9% of particles ≥5μm (OEM paper elements typically rate 7–10μm nominal) Water Separation: Hydrophobic barrier layer achieves 98% water removal efficiency, protecting CP4.2 high-pressure fuel pump from water-induced cavitation damage Cap Material: CNC-machined 6061-T6 billet aluminum with black Type II anodized finish — hard, chemically resistant oxide layer that won't chip, peel, or fade Cap Design: 32mm hex head for standard socket wrench — no special tools, no stripped plastic corners Drain Plug: Integrated black anodized aluminum drain valve for easy water drainage during service intervals O-Rings: 2 premium Viton® fluoroelastomer O-rings (cap seal + filter seal) — rated to 400°F continuous, resistant to ULSD, B20, and fuel additives Service Interval: Replace filter every 15,000–22,500 miles (24,000–36,000 km). Cap is a lifetime component — reuse through every filter change. Torque Spec: 25 ± 3 N·m (18 ± 2 ft-lbs) — no risk of cracking vs. plastic cap 📦 What's in the Box 1 × TP1015 Fuel Filter (multi-layer synthetic blend media, 5μm absolute) 1 × 134001 Housing Cap — CNC 6061-T6 billet aluminum, black Type II anodized 1 × Black anodized aluminum drain plug (pre-installed) 2 × Viton® O-rings (large cap seal + small filter seal) 1 × Installation instruction card 🛠️ Installation Tips PRIME THE FILTER: Fill the new filter with clean diesel before installing — this prevents the CP4.2 pump from running dry on first start. LUBE THE O-RINGS: Apply a thin film of clean diesel or silicone grease to both O-rings before installation. Dry O-rings can roll, pinch, or tear — causing hard starts and air in the fuel system. TORQUE TO SPEC: Hand-tighten, then torque to 18 ft-lbs (25 N·m). The billet cap threads engage smoothly — if you feel any resistance, back off and realign. BLEED THE SYSTEM: After installation, cycle the key to "ON" (without starting) 3–5 times to prime the fuel system. The CP4.2 is self-priming — you'll hear the in-tank pump cycle. CHECK FOR LEAKS: Start the engine and inspect the cap area. No drips = good to go. ❓ FAQ Q: What's the difference between the Black Cap and Silver Cap kits? A: Only the anodized finish color. Both caps are CNC-machined from the same 6061-T6 billet aluminum. Both use the same TP1015 filter and Viton O-rings. Both carry the same $69.99 price. Choose Black for a stealth/OEM+ look, Silver for a polished machined finish. Performance is identical. Q: Will the black anodizing wear off over time? A: No. Type II (sulfuric acid) anodizing converts the aluminum surface into a hard aluminum oxide layer — it's not a coating or paint that can flake off. It resists diesel fuel, engine degreasers, road salt, and UV exposure. The only thing that will mar it is a slipped wrench — so use a properly sized 32mm socket. Q: Can I reuse the billet cap with future filter changes? A: Absolutely. The 6061-T6 cap is a lifetime upgrade. At each service interval, you only need to replace the filter element and O-rings. Grab our TP1015 filter-only replacement for $17.99 and keep the black cap in service indefinitely. Q: Will this aftermarket kit void my warranty? A: No. Under the Magnuson-Moss Warranty Act, using aftermarket parts does not automatically void your warranty. The iFJF TP1015 filter meets or exceeds all OEM filtration specifications, and the billet cap is an upgrade over a known failure-prone OEM component (documented in GM TSB #18-NA-103). 🛒 Related Products Prefer a brighter finish? Silver 134001 Billet Cap + TP1015 Kit — $69.99, polished machined aluminum with black trim Already have the cap? TP1015 Fuel Filter Only — $17.99, replacement filter element with Viton O-rings Need an air filter too? TP1015 + A3231C Air Filter Combo — $37.99, save on shipping with both filters in one order ⚠️ 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 Replacement Fuel Filter Element — 5-micron absolute, 98% water separation, $19.99 🛒 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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iFJF TP1015 Fuel Filter + A3231C Air Filter Combo — Two Filters, One Order, Zero Hassle Diesel maintenance shouldn't be a scavenger hunt. The iFJF TP1015 Fuel Filter & A3231C Air Filter Combo bundles the two most frequently replaced filters on your 2017–2019 Duramax 6.6L L5P into a single order at a single price. One box shows up at your door. One shipping charge. One service session to knock out both filters and get back on the road. Whether you're stacking miles towing a fifth-wheel, running hot-shot deliveries, or just keeping your daily-driver HD truck running clean, this combo saves you the headache of ordering twice — and the extra shipping that comes with it. 💰 Why Buy the Combo? Item Purchased Separately Combo Price TP1015 Fuel Filter $17.99 $37.99 A3231C Air Filter $29.99 Shipping (2 separate orders) $–$$ 📦 What's Included 🔹 TP1015 Fuel Filter Filtration: 5 micron absolute — captures 99.9% of particles ≥5μm Media: Multi-layer synthetic blend with hydrophobic water-separation barrier Water Separation: 98% efficiency — protects CP4.2 pump from cavitation damage O-Rings: 2 × Viton® fluoroelastomer O-rings (cap seal + filter seal), rated 400°F Replaces: ACDelco TP1015 · GM 22937279 · 23456595 · 23304096 🔹 A3231C Engine Air Filter Media: High-flow synthetic cellulose blend with progressive-density layering Pleat Count: Optimized for maximum surface area within OEM housing dimensions Seal: Molded polyurethane perimeter gasket — no air bypass, no unfiltered air reaching the turbo Replaces: ACDelco A3231C · GM 84262965 · WIX CA12258 · Baldwin LAF3231 · Purolator 33-5065 🚛 Compatible Vehicles Chevrolet Silverado 2500HD / 3500HD 2017 · 2018 · 2019 6.6L L5P Duramax Turbo Diesel V8 Fuel filter also fits 2020 model year GMC Sierra 2500HD / 3500HD 2017 · 2018 · 2019 6.6L L5P Duramax Turbo Diesel V8 Fuel filter also fits 2020 model year Note: A3231C air filter fits 2017–2019 model years only. 2020 models may use a different air filter housing design — verify before ordering. TP1015 fuel filter fits all 2017–2020 L5P trucks plus Chevy Cruze 1.6L/2.0L diesel (2014–2019). 🔢 Cross-Reference / Replaces OEM Part Numbers Fuel Filter: TP1015 · ACDelco TP1015 · GM 22937279 · 23456595 · 23304096 Air Filter: A3231C · ACDelco A3231C · GM 84262965 · WIX CA12258 · Baldwin LAF3231 · Purolator 33-5065 ⚙️ Technical Specifications Specification TP1015 Fuel Filter A3231C Air Filter Media Type Multi-Layer Synthetic Blend High-Flow Synthetic Cellulose Micron Rating 5μm Absolute N/A (Engine Air) Water Separation 98% Efficiency N/A Seal Type 2 × Viton® O-Rings Molded Polyurethane Gasket Service Interval 15,000–22,500 mi 15,000–30,000 mi (inspect at 15K) Installation Under-hood, filter housing Airbox, drop-in, no tools 🛠️ Installation Tips FUEL FILTER — PRIME FIRST: Fill the new TP1015 with clean diesel before threading it into the housing. The CP4.2 pump is lubricated by fuel — a dry filter means a dry pump on first crank. That's a $4,000+ mistake. FUEL FILTER — LUBE O-RINGS: Light coat of clean diesel or silicone grease on both Viton O-rings. Prevents pinching and ensures a clean seal. FUEL FILTER — TORQUE: 18 ft-lbs (25 N·m). Smooth threads — if you feel resistance, back off and realign. FUEL FILTER — BLEED: Key ON (don't start) 3–5 times. Listen for the in-tank pump to cycle and stop. Then crank. AIR FILTER — DROP IN: Unclip the airbox, lift out the old filter, drop in the A3231C, reclip. No tools. No wrestling. Takes 90 seconds. AIR FILTER — CHECK THE SEAL: Make sure the polyurethane gasket sits flush against the airbox sealing surface. Any gap = unfiltered air = dusted turbo. ❓ FAQ Q: What exactly is included in this combo? A: You get 1 × TP1015 fuel filter element (with 2 Viton O-rings) and 1 × A3231C engine air filter. That's it — two filters, one box. No cap, no housing, no gimmicks. Q: Do both filters need to be replaced at the same time? A: Not necessarily — the fuel filter is typically due every 15,000–22,500 miles, while the air filter can stretch to 30,000 miles in clean conditions. But if you're doing a major service interval anyway, or you can't remember when you last changed either one, replacing both at once eliminates guesswork. Q: Will this combo fit my 2020 Silverado 2500HD? A: The TP1015 fuel filter fits 2020 models without issue. However, the A3231C air filter is confirmed for 2017–2019 only — GM changed the airbox design on some 2020 L5P trucks. Verify your air filter housing before ordering, or grab the TP1015 fuel filter standalone if you're unsure. Q: Will aftermarket filters void my warranty? A: No. The Magnuson-Moss Warranty Act protects your right to use aftermarket parts. Both the TP1015 and A3231C meet or exceed OEM filtration specifications. As long as the filter itself doesn't cause a failure (which it won't), your warranty remains intact. 🛒 Related Products Just need the fuel filter? TP1015 Fuel Filter Only — $17.99, replacement filter element for existing cap owners Just the air filter? A3231C Air Filter Only — $29.99, high-flow drop-in engine air filter Upgrade your filter cap? Silver 134001 Billet Cap + TP1015 Kit — $69.99, CNC 6061-T6 aluminum, fixes the OEM plastic cap problem permanently Prefer stealth black? Black 134001 Billet Cap + TP1015 Kit — $69.99, same premium kit in black anodized finish ⚠️ 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 Replacement Fuel Filter Element — 5-micron absolute, 98% water separation, $19.99 🛒 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 🔍 Shop All Duramax 6.6L Parts → 🔍 Browse All Fuel Filters →

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Product Overview The iFJF Duramax LMM EGR Delete Kit is a comprehensive engine preservation solution for 2007.5–2010 Chevrolet Silverado and GMC Sierra HD trucks equipped with the 6.6L LMM Duramax turbo diesel. This complete kit addresses the single most problematic emissions system on the LMM platform — the exhaust gas recirculation system — which is widely recognized by diesel technicians and Duramax enthusiasts as a leading cause of reduced engine longevity, decreased fuel economy, and expensive component failures. On the LMM Duramax, the EGR system routes soot-laden exhaust gas through an EGR cooler (a heat exchanger prone to internal cracking), then into the intake tract via the EGR valve. When the EGR cooler fails — and they do fail, often catastrophically — coolant enters the intake stream, leading to hydrolock risk, head gasket failure, and turbocharger damage. Even when functioning "correctly," the system coats the intake manifold, intake valves, and swirl flaps with a thick layer of carbon-coke that progressively restricts airflow and degrades performance. Our kit provides everything needed for a complete EGR system removal: a CNC billet EGR valve delete block off plate, a billet EGR cooler delete bridge, and a high-flow passenger-side up-pipe that replaces the factory pipe's EGR takeoff port. Every component is precision-machined from 6061-T6 billet aluminum or mandrel-bent from 304 stainless steel, designed to withstand the extreme heat, pressure, and vibration cycles unique to the 6.6L Duramax platform. Key Features Complete Three-Component Kit — Unlike partial kits that only delete the EGR valve, the iFJF LMM kit includes: (1) CNC billet EGR valve block off plate, (2) billet aluminum EGR cooler delete bridge, and (3) 304 stainless steel passenger-side up-pipe without EGR takeoff. This is the full system — everything you need in one box. EGR Cooler Delete Bridge — The LMM's EGR cooler is the most failure-prone component in the system. Our billet aluminum delete bridge replaces the cooler entirely, eliminating the risk of internal coolant leaks into the intake. The bridge routes coolant directly to the factory return path, maintaining proper cooling system function without the EGR cooler in the circuit. 304 Stainless Steel Up-Pipe — The passenger-side up-pipe replaces the factory pipe that routes exhaust from the exhaust manifold to the turbocharger. By eliminating the EGR takeoff port, this pipe delivers unrestricted exhaust flow to the turbine — reducing backpressure and improving turbo spool characteristics compared to the restricted factory pipe. 6061-T6 Billet Aluminum Construction — Both the valve block off plate and cooler delete bridge are CNC machined from solid 6061-T6 billet aluminum bar stock. No castings, no stampings — just precise, warp-resistant components that maintain seal integrity under the extreme thermal cycling of a 6.6L turbo diesel. Complete Hardware & Gasket Kit — Includes all required stainless steel bolts, washers, exhaust gaskets, O-rings, and coolant hose fittings for a proper, leak-free installation. No trips to the parts store mid-install. Compatibility Year Range Make Model Engine Notes 2007.5–2010 Chevrolet Silverado 2500HD 6.6L Duramax LMM (LLY-based) All cab configurations 2007.5–2010 Chevrolet Silverado 3500HD 6.6L Duramax LMM SRW & DRW 2007.5–2010 GMC Sierra 2500HD 6.6L Duramax LMM All cab configurations 2007.5–2010 GMC Sierra 3500HD 6.6L Duramax LMM SRW & DRW Important fitment notes: 2007.5 model year only — This kit fits the "Classic" body style transition trucks produced from mid-2007 onward. It is not compatible with 2001–2007 LB7/LLY/LBZ Duramax engines, which use a different EGR and up-pipe configuration. Not compatible with 2011+ LML Duramax — The LML (2011–2016) uses a different EGR and exhaust architecture. This kit is specific to the LMM engine code. Cab-and-chassis models — Verify up-pipe clearance on cab-and-chassis configurations; fitment confirmed for standard pickup bed configurations. Specifications EGR Valve Block Off Plate: 6061-T6 billet aluminum, CNC machined, 6.35 mm (1/4") thickness EGR Cooler Delete Bridge: 6061-T6 billet aluminum, CNC machined with integrated coolant passage Passenger Up-Pipe: 304 stainless steel, mandrel-bent, TIG-welded flanges, 2.5" OD tubing Up-Pipe Flanges: Laser-cut 304 stainless steel, 3/8" thickness, TIG-welded with back-purged welds Hardware: Grade 304 and 316 stainless steel bolts, nuts, and washers (application-specific) Gaskets & Seals: Multi-layer stainless steel (MLS) exhaust gaskets, Viton O-rings for coolant fittings Surface Finish: Block off plate and bridge — CNC natural finish; up-pipe — brushed stainless Package Weight: Approximately 3.6 kg (8.0 lbs) Package Contents: 1× EGR valve block off plate, 1× EGR cooler delete bridge, 1× 304SS passenger up-pipe, MLS exhaust gaskets (×4), Viton O-rings (×2), stainless hardware kit, coolant hose fittings, installation guide Installation Notes Disconnect both batteries — Duramax HD trucks have dual batteries. Disconnect negative terminals on both before starting any work near the starter, alternator, or engine harness. Drain coolant — Drain approximately 2–3 gallons from the radiator petcock. The EGR cooler is part of the engine coolant circuit, and you will lose coolant when removing the cooler. Remove the factory EGR cooler — The LMM EGR cooler is located on the passenger side of the engine, mounted between the exhaust up-pipe and the intake manifold. Disconnect the coolant lines (mark their routing), unbolt the cooler from its bracket, and remove it. Remove the factory up-pipe — The passenger-side up-pipe connects the exhaust manifold to the turbocharger. The factory pipe incorporates the EGR cooler feed port. Remove the turbo heat shield, unbolt the up-pipe from the manifold and turbo flanges, and extract the pipe. This is often the most time-consuming step — expect to work in tight quarters. Install the iFJF up-pipe — Position the 304SS up-pipe, install new MLS gaskets at both the manifold and turbo flanges, and torque bolts to factory specification (typically 30–35 ft-lbs). The TIG-welded flanges ensure perfect alignment. Install the cooler delete bridge — Connect the coolant lines to the delete bridge using the supplied fittings and Viton O-rings. The bridge maintains proper coolant flow routing while eliminating the cooler from the circuit. Install the valve block off plate — Remove the EGR valve from the intake manifold, install the block off plate with the supplied gasket, and torque to specification. Refill coolant and bleed the system — Refill with the correct Dex-Cool compatible coolant, perform the bleed procedure (elevate front of vehicle, run engine with heater on full), and check for leaks at all connections. ECU tuning required — The LMM ECM will detect the missing EGR system components and trigger diagnostic trouble codes, potentially entering reduced-power (limp) mode. A custom ECM tune is required to disable EGR-related DTCs and restore full engine functionality. Tools needed: Standard and deep metric socket sets (8 mm–15 mm), torque wrench, coolant drain pan, penetrating oil, hose clamp pliers, turbo heat shield tools, floor jack and stands for under-vehicle access. Estimated time: 4–6 hours for an experienced DIY mechanic; 3–4 hours for a professional diesel technician. Frequently Asked Questions Why should I delete the EGR on my LMM Duramax? The LMM EGR system is the leading cause of several expensive failure modes on the 6.6L Duramax. The EGR cooler is known to crack internally, introducing coolant into the intake — a condition that can hydrolock the engine and bend connecting rods. Even a properly functioning EGR system continuously coats the intake manifold, intake valves, and turbo compressor wheel with abrasive carbon-coke, progressively reducing airflow and degrading fuel economy. Deleting the EGR system eliminates both failure risks and is one of the most recommended reliability modifications in the Duramax community. Does this kit include the up-pipe? Yes — this is a complete kit that includes the 304 stainless steel passenger-side up-pipe. Many competitors sell the up-pipe separately or omit it entirely, leaving you to source one elsewhere. The iFJF up-pipe is mandrel-bent from thick-wall 304SS and features laser-cut, TIG-welded flanges for perfect fitment. Will this kit cause my truck to go into limp mode? If installed without a supporting ECM tune — yes. The LMM ECM actively monitors the EGR system, and when it detects missing or non-functional EGR components, it will trigger DTCs and may engage reduced-power (limp) mode as a protective measure. A custom tune from a reputable Duramax tuner (using EFILive, HP Tuners, or similar) is mandatory. The tune must disable EGR-related DTCs, set EGR readiness monitors appropriately, and optionally optimize fuel and boost mapping for the improved airflow you'll achieve post-delete. Is this kit compatible with my 2008 GMC Sierra 2500HD? Absolutely. The 2008 GMC Sierra 2500HD with the 6.6L LMM Duramax is a direct-fit application. Both Chevrolet Silverado and GMC Sierra HD trucks from 2007.5–2010 share identical LMM engine architecture, EGR system layout, and exhaust configuration. What's the difference between LMM and LBZ EGR delete kits? The LMM and LBZ use different EGR cooler designs, different up-pipe configurations, and different ECM architectures. The LMM introduced a more complex EGR cooler with additional coolant passages and a revised up-pipe design compared to the LBZ. Components are not interchangeable between the two engine codes. This kit is specifically engineered for the LMM (2007.5–2010) platform. Will deleting the EGR improve my fuel economy? Many Duramax owners report a measurable improvement in fuel economy after EGR deletion — typically 1–3 MPG depending on driving conditions. The improvement comes from two sources: (1) the engine is no longer ingesting hot, oxygen-depleted exhaust gas during cruise, which improves combustion efficiency, and (2) the intake system stays clean over time, preventing the gradual airflow restriction that robs efficiency as carbon builds up. Combined with a well-calibrated tune, fuel economy gains can be significant on highway-driven trucks. Will this kit affect the reliability of my truck? When properly installed with a quality supporting tune, EGR deletion improves long-term engine reliability by eliminating the risk of EGR cooler failure (the #1 cause of catastrophic Duramax engine damage on LMM platforms) and preventing carbon-coke buildup in the intake system. The iFJF components are manufactured from materials selected for durability under diesel operating conditions: 6061-T6 billet aluminum for thermal stability, 304 stainless steel for corrosion resistance, and Viton seals for coolant circuit integrity at sustained high temperatures. ⚠️ Off-Road / Competition Use Only This Duramax LMM EGR delete kit is sold exclusively for off-road, racing, and competition use. The Clean Air Act (42 U.S.C. §7522(a)(3)) expressly prohibits tampering with or removing emissions control devices on motor vehicles. Installation of this product on a vehicle operated on public roads is a violation of federal law and may result in penalties of up to $4,819 per violation. Additionally, state and local regulations may impose further restrictions. This product is not CARB-certified and is not legal for sale or use in California on pollution-controlled motor vehicles. The purchaser and installer assume all liability for compliance with applicable laws. iFJF is not responsible for improper use, installation, or any consequences thereof. ⚠️ Off-Road / Competition Use Only: This product is intended for off-road or competition vehicles only. Not legal for highway use on emissions-controlled vehicles in the US and many other jurisdictions. Check local and federal regulations before purchasing. Removal of emissions equipment may void your vehicle warranty. 🔗 Duramax Diesel Resources & Maintenance 📖 Related Guides: L5P Duramax Fuel Filter Housing Cap Replacement — Complete DIY Guide Duramax Fuel Filter Housing: Compatibility Guide (2001–2024) Duramax 6.6L Oil Change: Complete DIY Guide (Every Generation) 🔍 Shop All Duramax 6.6L Parts → | EGR Delete Parts → | Exhaust System →

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Make Duramax Fuel Filter Changes Quick & Easy — Add This 1/2" Spacer Kit Anyone who's changed a fuel filter on a 6.6L Duramax knows the struggle: the filter is wedged tight against the intake manifold, making it a knuckle-busting, one-flat-at-a-time wrestling match every time. This 1/2" billet aluminum spacer kit relocates the entire filter head outboard, giving you the clearance you need for quick, frustration-free filter changes — every single time. What's in the Kit Part Material Purpose Spacer Plate ×1 Billet 6061-T6 Aluminum, Anodized Relocates filter head outward by 1/2" for tool clearance Bleeder Screw ×1 Billet 6061-T6 Aluminum, Anodized Upgrades fragile plastic bleeder — won't strip or crack Bolts ×4 Grade 8 Steel 2 short bolts (30mm thread, 2001–2010) + 2 long bolts (45mm thread, 2011+) 🚛 Vehicle Compatibility Fits all 2001–2017 GM 6.6L Duramax fuel filter housings: Chevrolet Silverado 2500HD/3500HD (2001–2017) GMC Sierra 2500HD/3500HD (2001–2017) Engine codes: LB7 · LLY · LBZ · LMM · LML (2001–2017) Kit includes BOTH short and long bolts — use short bolts for 2001–2010, long bolts for 2011+ 🛒 Choose Your Color Available in Blue, Red, and Gold anodized finishes — pick the color that matches your engine bay or just looks good to you. All colors use the same billet 6061-T6 aluminum with Type II anodizing for corrosion resistance. Why You Need This Spacer 🔧 Filter Changes That Take Minutes, Not an Hour — The stock filter head sits flush against the intake, leaving zero room for a filter wrench. With this 1/2" spacer, you get enough clearance to use a proper tool and spin the filter off in seconds. 🔧 Bleeder Screw Upgrade Included — You're already in there, so the kit includes our CNC aluminum bleeder screw. The stock plastic bleeder strips easily; this billet aluminum unit is a lifetime part that threads smoothly and seals tight every time. 🔧 Won't Affect Fuel Lines or Clearance — The 1/2" offset is carefully calculated. It won't stretch fuel lines, interfere with the hood, or cause any clearance issues. It just pushes the filter head out enough to get your hands and tools in. 🛠️ Installation Remove the two filter head mounting bolts from the intake manifold. Place the spacer plate between the filter head bracket and the intake manifold. Install the included bolts: use short bolts (30mm thread) for 2001–2010 trucks, long bolts (45mm thread) for 2011–2017 trucks. While you're in there, replace the plastic bleeder screw with the included aluminum unit. Torque bolts evenly to 18 ft-lb — do not over-tighten into the aluminum intake. Install a new fuel filter, prime the system, and you're done. Total install time: 15–20 minutes with basic hand tools. No fabrication, no fuel line modification, no check engine lights. ❓ Frequently Asked Questions Q: Will the 1/2" spacer cause clearance issues with the hood or engine cover? No. The 1/2" offset pushes the filter head toward the driver's side fender well, not upward. There is ample clearance in all directions — this spacer has been tested on stock and lifted trucks from 2001 through 2017 without any fitment issues. Q: Do I need longer fuel lines with this spacer? No. The stock fuel lines have enough flex and length to accommodate the 1/2" relocation without binding or kinking. The spacer works with factory lines on all Duramax years. Q: Can I use this spacer WITH the iFJF rebuild kit? Absolutely — and we recommend it. If you're already rebuilding the filter head with our seal rebuild kit, adding the spacer makes future filter changes faster. The two kits complement each other perfectly — rebuild the seals once, add the spacer, and enjoy easy filter changes for the life of the truck. Check out our complete Duramax filter head rebuild guide for step-by-step instructions. Q: Which bolt length do I use for my year? Short bolts (30mm thread): 2001–2010 Duramax (LB7, LLY, LBZ, LMM). Long bolts (45mm thread): 2011–2017 Duramax (LML). Both sets are included in the kit. Q: Does this spacer affect fuel pressure or cause air intrusion? No. The spacer sits between the filter head bracket and the intake manifold — it does not open the fuel system or affect any seals. Fuel flow, pressure, and priming behavior are completely unchanged. Your Duramax will run exactly as it did before, just with easier filter access.

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1R-0750 Fuel Filter + Billet Aluminum Refit Head Kit for Duramax 6.6L Diesel Upgrade your 2005-2016 GM Duramax 6.6L diesel fuel filtration with this complete kit that replaces the problematic OEM plastic filter housing with a CNC-machined billet aluminum refit head and high-capacity 1R-0750 spin-on filter. The factory filter head is known for air intrusion, cracking, and expensive filter replacements. This billet aluminum solution allows you to use the widely available and cost-effective 1R-0750 spin-on filter — providing superior filtration at a fraction of the OEM filter cost. Key Features Complete Filter Head Replacement Kit: Includes 12642623 billet aluminum filter head with hand primer pump, 1R-0750 refit adapter head (CNC-machined, black anodized), and 1R-0750 spin-on filter. Billet Aluminum Construction: Both filter head and refit adapter are precision-machined from solid 6061 aluminum — no more cracked plastic housings. Improved Design: Upgraded bolt eliminates removing the check ball during assembly. Aluminum bleeder screw replaces the fragile OEM plastic bleeder. High-Flow Filtration: 1R-0750 filter provides 5-micron filtration with industry-leading flow rates for maximum injection pump protection. Massive Cost Savings: 1R-0750 filters cost $15-25 vs. $40-60 for OEM Duramax filters — pays for itself in 2-3 changes. Compatibility Year Make Model Engine 2005-2007 Chevrolet/GMC Silverado/Sierra 2500HD 3500HD 6.6L Duramax LLY/LBZ 2007.5-2010 Chevrolet/GMC Silverado/Sierra 2500HD 3500HD 6.6L Duramax LMM 2011-2016 Chevrolet/GMC Silverado/Sierra 2500HD 3500HD 6.6L Duramax LML Specifications Component Detail 12642623 Filter Head Billet Aluminum, Electrophoresis Coated, Hand Primer Pump, Aluminum Bleeder 1R-0750 Refit Head CNC-Machined 6061 Aluminum, Black Anodized 1R-0750 Filter 5 Micron, 1-14 UNS-2B Thread, Spin-On Style Cross-Ref Filters BF7633, P551313, P551740, FF5320, TP3018, 19305685, 12664429 Why Choose iFJF? Fix the OEM Weak Point: Factory Duramax filter heads crack, leak air, and cost a fortune. Our billet solution fixes all three. Proven 1R-0750 Filter: The Caterpillar 1R-0750 is legendary for filtration quality — now available for your Duramax. Precision Fit: Every unit CNC-machined to exact tolerances and pressure-tested before shipping. Frequently Asked Questions Q: Will this fit my 2013 Duramax LML?A: Yes. This kit fits all 2005-2016 Duramax including LLY, LBZ, LMM, and LML engine codes. Q: Do I need to remove the check ball during installation?A: No — our upgraded bolt design eliminates this step entirely. Q: What replacement filters can I use afterwards?A: Any filter crossing with 1R-0750: BF7633 (Baldwin), P551313 (Donaldson), FF5320 (Fleetguard), and others. Q: How often should I replace the filter?A: Every 10,000-15,000 miles or every other oil change. More frequently with biodiesel or dusty conditions. Q: Does the kit include installation instructions?A: Professional installation is recommended. The kit includes all necessary components for OEM-to-spin-on conversion. Related Products 1R-0750 Fuel Filter (Replacement Filter) 🔗 Duramax Diesel Resources 📖 Maintenance Guides: Duramax Fuel Filter Housing: Complete Compatibility Guide (2001–2024) 2001–2016 Duramax Fuel Filter Replacement: Complete DIY Guide Top 5 Diesel Fuel Filter Housing Problems (And How to Fix Them) Duramax 6.6L Oil Change: Complete DIY Guide (Every Generation) 🔍 Shop All Duramax 6.6L Parts → | Browse All Fuel Filters →

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  Fuel filter: Provide high flow rates and superior 99% filtration efficiency with a premium filtration 5 micron media to help improve engine performance. 1R-0750 Refit Head: High-Flow,Increased Filtration and Lower Cost Filter Replacements,Billet Aluminum, Black-Anodized CNC machined designed to allow you to replace the poor-quality OEM filter with a superior quality spin-on filter element. Compatible with:For Duramax 6.6L V8 2001-2016 Chevy Silverado/GMC Sierra 2500HD 3500HD Diesel Engine LB7/LLY/LBZ/LMM/LML. Cross reference: 1R-0750, BF7633, P551313, P551740, FF5320, MK13104, P8334, 33528, CB01405912, LFF3347, 3528. Package includes: 1 x fuel filter,1 x Refit Head with needed kits.

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Product Overview The 12642623 Fuel Filter Head Kit is the ultimate fuel filtration upgrade for your GM Duramax 6.6L diesel truck. This comprehensive package includes two essential components: the 12642623 billet aluminum fuel filter head with integrated hand primer pump and heater element, plus the 1R-0750 Refit Head that converts your fuel system to accept high-flow, lower-cost CAT 1R-0750 spin-on filter elements. Compatible with 2005-2016 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks with Duramax LLY, LBZ, LMM, and LML engines, this kit addresses the two biggest weaknesses of the factory fuel system: the failure-prone plastic filter housing and the expensive, restrictive OEM filter element. Compatibility Make Model Year Range Engine Code Chevrolet Silverado 2500HD 2005 – 2016 LLY / LBZ / LMM / LML Chevrolet Silverado 3500HD 2005 – 2016 LLY / LBZ / LMM / LML GMC Sierra 2500HD 2005 – 2016 LLY / LBZ / LMM / LML GMC Sierra 3500HD 2005 – 2016 LLY / LBZ / LMM / LML Replaces OEM Part Numbers: 12642623, 12664429 (filter head base) Specifications Specification Detail Part Number (SKU) FJ-12642623-1R0750 Filter Head Material Billet Aluminum with Electrophoresis Coating Refit Head Material CNC Billet Aluminum, Black Anodized Hand Pump Material Iron Body & Tubes Bleeder Screw Aluminum (Upgraded from Plastic OEM) Heater Element Included (Factory Plug Compatible) Compatible Filter CAT 1R-0750 Spin-On (High-Flow) Warranty 60-Day Satisfaction Guarantee Key Features Billet Aluminum Construction: Both the filter head and refit adapter are CNC-machined from solid billet aluminum — dramatically more durable than the factory plastic housing that's notorious for cracking, leaking, and stripping threads. CAT 1R-0750 Filter Conversion: The included refit head allows you to use the widely available CAT 1R-0750 spin-on filter element (sold separately). This filter offers 2-micron absolute filtration, higher flow rates, and costs significantly less than the OEM ACDelco element. Upgraded Bleeder Screw: We've replaced the fragile plastic OEM bleeder screw with a precision-machined aluminum screw — no more stripping during routine filter changes. Integrated Hand Primer Pump: The built-in iron hand pump eliminates the need for external priming tools. After a filter change, simply pump the primer to purge air from the system before starting. Corrosion Protection: The electrophoresis surface treatment on the filter head base provides superior corrosion resistance compared to raw aluminum, protecting against road salt, moisture, and diesel exposure. Simplified Installation: Our improved refit head bolt design eliminates the need to remove the check ball and spring from the 12642623 filter head before assembly — saving time and preventing lost small parts. Heater Element Included: Comes with a factory-compatible fuel heater plug that connects directly to your existing wiring harness for cold-weather starting reliability. Why Choose iFJF iFJF engineers aftermarket solutions that solve real problems Duramax owners face. We saw too many trucks stranded by cracked plastic filter housings and expensive OEM filters, so we developed this complete upgrade kit. Every component is manufactured to tight tolerances and inspected before packaging. The electrophoresis coating, black-anodized refit head, and upgraded bleeder screw are details that demonstrate our commitment to quality. Thousands of Duramax owners trust iFJF for fuel system parts that outperform factory equipment at a fraction of the cost. FAQ Q: What makes this kit better than the OEM fuel filter head? A: Three major improvements: (1) Billet aluminum replaces fragile plastic that commonly cracks, (2) the 1R-0750 refit head lets you use CAT spin-on filters that filter down to 2 microns at a lower cost per change, and (3) our aluminum bleeder screw won't strip like the OEM plastic one. It's a permanent upgrade, not just a replacement. Q: Will the CAT 1R-0750 filter work with my existing fuel system? A: Yes, once the 1R-0750 refit head is installed on your 12642623 filter base. The CAT 1R-0750 filter (not included) is a high-flow, 2-micron absolute spin-on element that provides superior filtration compared to the factory ACDelco TP3018 cartridge. It's widely available at CAT dealers, truck stops, and online. Q: Can I install this myself? A: Yes, this is a bolt-on upgrade. Basic mechanical skills and hand tools are all you need. The filter head mounts to the factory bracket, and the electrical connector for the heater plugs right in. The improved refit head bolt design means you no longer need to disassemble the check ball and spring. Typical installation takes 1-2 hours. Q: Does this kit include the filter element? A: The CAT 1R-0750 filter element is sold separately. This kit includes the filter head base, refit adapter, hand pump assembly, bleeder screw, heater plug, mounting bolts, and O-rings — everything needed to convert your truck to accept 1R-0750 filters. Q: Will this fit my 2015 LML? A: Yes, this kit is fully compatible with 2011-2016 LML Duramax engines in both Silverado and Sierra 2500HD/3500HD trucks. The 12642623 filter head is the correct replacement for LML applications. Explore Related Products Building a bulletproof Duramax fuel system? Check our Diesel Fuel System Collection for CAT 1R-0750 filter multi-packs, fuel pressure regulators, lift pumps, and complete fuel system rebuild kits. Also browse our Duramax Parts Collection for engine-specific upgrades. 🔗 Duramax Diesel Resources 📖 Maintenance Guides: Duramax Fuel Filter Housing: Complete Compatibility Guide (2001–2024) 2001–2016 Duramax Fuel Filter Replacement: Complete DIY Guide Top 5 Diesel Fuel Filter Housing Problems (And How to Fix Them) Duramax 6.6L Oil Change: Complete DIY Guide (Every Generation) 🔍 Shop All Duramax 6.6L Parts → | Browse All Fuel Filters →

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1R-0750 Secondary Fuel Filter 3-Pack for 2001–2016 Duramax 6.6L & Caterpillar Engines The 1R-0750 secondary fuel filter is the last line of defense before fuel enters your Duramax's CP3 high-pressure injection pump — and it's the most overlooked maintenance item on these trucks. This 3-pack of secondary fuel filters provides three complete changes for 2001–2016 Duramax 6.6L engines (all generations: LB7 through LML) plus Caterpillar D4E and D6H heavy equipment. Each filter is individually sealed and manufactured in IATF 16949 certified facilities. 💡 Pro Tip: The secondary filter (on the engine, passenger side) should be replaced every other oil change — not just when you remember. With this 3-pack, you're covered for ~45,000 miles of driving. Pair with our billet aluminum filter head to permanently upgrade the failure-prone plastic cap while you're in there. Key Features IATF 16949 Certified Filtration — Manufactured to the same quality standard required for OE suppliers to GM and Caterpillar. Consistent micron rating, flow rate, and burst strength across every filter. Secondary (Final) Filtration Stage — This is the engine-mounted secondary filter, downstream from the primary fuel filter/water separator. It provides the final filtration before fuel hits the CP3 high-pressure pump — the most critical filtration stage in the Duramax fuel system. Multi-Layer Synthetic Media — Designed for the 26,000+ psi fuel pressures generated by the CP3 common-rail system. Captures contaminants as small as 4 microns absolute to protect injector nozzles from erosion. 3-Pack Value — Three filters at a bulk price. Covers three secondary filter changes (roughly 45,000 miles of driving for the average Duramax owner). Keep one on the shelf and never run an overdue filter. Dual Application — On-Highway + Off-Highway — Same filter element used in both the Duramax 6.6L and Caterpillar D4E/D6H heavy equipment engines. If you run a Duramax truck and Cat equipment, one filter SKU covers both. Compatibility Application Year Make / Model Engine Chevrolet / GMC 2001–2016 Silverado 2500HD/3500HD, Sierra 2500HD/3500HD 6.6L Duramax LB7, LLY, LBZ, LMM, LML Caterpillar — D4E, D6H LGP Cat 3114, 3116 Diesel Cross-Reference Brand Part Number CAT (OEM) 1R-0750 Baldwin BF7633 Fleetguard P551313 Donaldson P551313 WIX 33114 Installation Guide — Duramax Secondary Filter The secondary fuel filter is located on the passenger side of the engine, mounted to the intake manifold area. It's the smaller of the two fuel filters on the Duramax — not the large spin-on filter under the driver's door (that's the primary). Tools needed: 36mm socket or filter wrench, clean rags, diesel-rated container for spills. Process: (1) Place a container under the filter housing to catch fuel. (2) Unscrew the cap/filter assembly — the filter element stays inside the cap. (3) Remove old filter, wipe the housing interior clean. (4) Install new filter into cap with new O-ring. (5) Reinstall cap — hand-tighten, then 1/4 turn with wrench. (6) Cycle key to ON (not start) 3-5 times to prime. (7) Start engine and check for leaks. Frequently Asked Questions Q: Which filter is this — primary or secondary?A: This is the secondary (final) filter — the smaller filter mounted on the engine, passenger side. It's the last filtration stage before the CP3 high-pressure fuel pump. The primary filter (larger, frame-mounted under driver's door) is a separate part. Q: How often should I change the secondary fuel filter?A: Every other oil change, or approximately every 15,000 miles under normal driving conditions. If you tow heavy or run biodiesel blends, change every 10,000 miles. The CP3 pump relies on clean fuel — a clogged secondary filter starves the pump and damages injectors. Q: Does this fit my Caterpillar D6H dozer?A: Yes. The 1R-0750 is the standard secondary fuel filter for Cat D4E and D6H LGP models with the 3114/3116 diesel engine. It's the same filter element used in the Duramax — one part number for both applications. Q: Do I need special tools for the Duramax filter change?A: A 36mm socket or a dedicated filter cap wrench makes the job easier. The filter housing is plastic (OEM) — avoid using a strap wrench directly on the cap, as it can crack. If you're upgrading to an aluminum cap, use our billet aluminum refit head for a permanent upgrade. Q: What happens if I don't change the secondary filter on time?A: A clogged secondary filter restricts fuel flow to the CP3 pump. Symptoms progress from hard starting → rough idle → power loss under load → CP3 pump cavitation damage → injector failure. On a Duramax, CP3 replacement is $1,500+. A $17 filter is cheap insurance. 🔗 Duramax Diesel Resources 📖 Maintenance Guides: Duramax Fuel Filter Housing: Complete Compatibility Guide (2001–2024) 2001–2016 Duramax Fuel Filter Replacement: Complete DIY Guide Top 5 Diesel Fuel Filter Housing Problems (And How to Fix Them) Duramax 6.6L Oil Change: Complete DIY Guide (Every Generation) 🔍 Shop All Duramax 6.6L Parts → | Browse All Fuel Filters →

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Compatible with:Aluminum Adapter Refit Head for 1R-0750 Fuel Filter fits Duramax 6.6L 2001-2016 Chevy Silverado/GMC Sierra LB7/LLY/LBZ/LMM/LML engine. Function:High-Flow,Increased Filtration and Lower Cost Filter Replacements,Billet Aluminum, Black-Anodized CNC machined refit head designed to allow you to replace the poor-quality OEM filter with a superior quality spin-on filter element. Upgrade Bolt:We improved the process of the refit head's bolt,you don't need to remove the check ball on the 12642623 fuel filter head anymore before combine the head with this product. Advantage:Uses 2 Viton O-Rings and is 100% Biodiesel compatible,Helps Prolong Injector Pump, Injector, and Fuel System Life.Provides an easy method of installing either a 1-micron 100% microglass filter element or a CAT 2-micron filter element. Proposal:If installing on 2011+ trucks,it is recommended that you install a washer behind the filter head to offset the filter head by approximately 0.5" for increased access.

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1R-0750 Aluminum Fuel Filter Housing for 2001–2016 Duramax 6.6L Diesel If you own a Duramax, you've probably heard the horror stories — or lived one. The OEM plastic fuel filter housing cap on 2001–2016 GM trucks is notorious for cracking, warping, and leaking under the heat and pressure of daily driving. When it fails, it doesn't just create a mess — it introduces air into the fuel system, causing hard starts, rough idle, and potential CP3/CP4 injection pump damage. This CNC-machined 6061-T6 billet aluminum refit head eliminates that failure point permanently. ⚠️ Common Symptom Check: Hard start after sitting overnight? Air in the clear fuel line? Fuel smell under the hood? Your plastic factory filter cap may already be failing. This billet aluminum upgrade is a one-and-done fix. Key Features CNC-Machined 6061-T6 Billet Aluminum — Precision-machined from aerospace-grade aluminum bar stock, not cast. Maintains dimensional stability through extreme heat cycles that warp and crack OEM plastic caps. Permanent Upgrade Over OEM Plastic — The factory plastic filter head on Duramax engines is a known weak point. Heat cycling causes micro-cracks that grow into air leaks — introducing air into the CP3 high-pressure pump. This aluminum housing eliminates the problem at the source. Accepts Standard 1R-0750 / BF7633 Filter Elements — Designed to work with the same OEM-spec secondary fuel filter elements you already use. No special filters required — just swap the cap and use your regular filter. Anodized Corrosion Protection — Hard anodized finish resists corrosion from road salt, diesel fuel exposure, and under-hood chemicals. Won't rust, pit, or degrade like untreated aluminum or plastic. O-Ring Groove Precision — The sealing surface is machined to exact OEM tolerances for a consistent, leak-free seal with the filter element gasket every single change. Compatibility Year Make Model Engine 2001–2004 Chevy / GMC Silverado 2500HD/3500HD, Sierra 2500HD/3500HD 6.6L Duramax LB7 2004.5–2006 Chevy / GMC Silverado 2500HD/3500HD, Sierra 2500HD/3500HD 6.6L Duramax LLY 2006–2007 Chevy / GMC Silverado 2500HD/3500HD, Sierra 2500HD/3500HD (Classic) 6.6L Duramax LBZ 2007.5–2010 Chevy / GMC Silverado 2500HD/3500HD, Sierra 2500HD/3500HD 6.6L Duramax LMM 2011–2016 Chevy / GMC Silverado 2500HD/3500HD, Sierra 2500HD/3500HD 6.6L Duramax LML Specifications Specification Value Material 6061-T6 Billet Aluminum Finish Hard Anodized (Clear or Black) Filter Compatibility 1R-0750, BF7633, P551313, 3114 secondary filters Manufacturing Process CNC Machined (not cast) Thread Standard OEM filter thread Why Upgrade to Aluminum? The Duramax secondary fuel filter housing operates in one of the hottest areas of the engine bay — directly above the turbo and exhaust manifold on the passenger side of the engine. The OEM plastic cap undergoes extreme thermal cycling: cold winter mornings, 200°F+ under load, and everything in between. Over 50,000–100,000 miles, this cycling causes the plastic to develop micro-cracks at the thread roots and sealing surfaces. Once air enters the fuel system, the CP3 high-pressure pump loses prime — resulting in hard starts, rough running, and accelerated pump wear. This billet aluminum cap solves the problem with a material that doesn't fatigue, warp, or crack from heat cycling. Frequently Asked Questions Q: Will this fit my 2015 Duramax LML?A: Yes. This housing fits all 2001–2016 Duramax 6.6L engines, including LML (2011–2016). It uses the same 1R-0750 secondary filter element you're already running. Q: Do I need to replace the whole filter assembly or just the cap?A: This is a direct replacement for the factory cap/filter head only. You keep your existing filter base/housing on the engine. Installation is: remove old plastic cap, swap the filter element into the new aluminum cap, screw it on. 15 minutes, basic hand tools. Q: How do I know if my OEM plastic cap is failing?A: Signs include: hard starting after the truck sits overnight, visible air bubbles in the clear fuel line between the filter and CP3 pump, fuel residue around the filter cap, or the cap feeling unusually loose when tightening. If you see any of these, replace the cap before it strands you. Q: Does this use the same O-ring as the factory cap?A: Yes. The O-ring that comes with your standard 1R-0750 or BF7633 filter element works perfectly. No special gaskets or seals required. Q: Can I use this with a lift pump?A: Yes. This aluminum housing is fully compatible with aftermarket lift pump systems (FASS, AirDog, etc.). The machined sealing surfaces handle the increased fuel pressure without leaking. 🔗 Duramax Diesel Resources 📖 Maintenance Guides: Duramax Fuel Filter Housing: Complete Compatibility Guide (2001–2024) 2001–2016 Duramax Fuel Filter Replacement: Complete DIY Guide Top 5 Diesel Fuel Filter Housing Problems (And How to Fix Them) Duramax 6.6L Oil Change: Complete DIY Guide (Every Generation) 🔍 Shop All Duramax 6.6L Parts → | Browse All Fuel Filters →

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  Feature: Thread Size:M20x1.5(connect Refit Head),1-14 UNS(connect fuel filter).Material:Stainless Steel. Upgrade: We innovative improved the process of the refit head's bolt,you don't need to take away the check ball and spring in the 12642623 fuel filter head anymore before combine the fuel filter and head. Compatible with: 2001-2016 Chevy Silverado/GMC Sierra 2500 3500 Duramax 6.6L V8 Diesel Engine LB7/LLY/LBZ/LMM/LML. Install location: Connect the Fuel Filter Refit Head and the 1R-0750 Fuel Filter which replaces inefficient OE filter. Package contents:1 x Refit Head Bolt,2 x O-rings.

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Product Overview The 29531007 is a premium replacement fuel filter engineered for GMC, Ram 6.6L diesel engines (2001-2016). Manufactured to strict OEM specifications, this filter delivers superior contaminant removal to protect your fuel injection system from harmful particles, water, and debris that can cause premature wear and costly repairs. Key Features & Benefits High-Efficiency Filtration — Captures microscopic contaminants that standard filters miss, extending injector life and maintaining optimal fuel flow OEM-Grade Construction — Built with heavy-duty filter media, corrosion-resistant end caps, and precision-molded seals for leak-free performance Direct Fit Replacement — Drop-in design matches original equipment dimensions and mounting points — no modifications required Water Separation Technology — Advanced coalescing media separates emulsified water from diesel fuel, preventing injector corrosion and microbial growth Rigorous Quality Testing — Every filter undergoes multi-point inspection for burst pressure, filtration efficiency, and flow rate consistency Compatibility & Fitment Vehicle Make Model Year Range Engine GMC, Ram 2500HD, Duramax, Sierra, 2500, Silverado 2001-2016 6.6L ⚠️ Fitment Notice: Always verify your vehicle's year, make, model, and engine before ordering. Cross-reference your existing filter part number with the replacement numbers listed below. Technical Specifications Specification Value Product Type Fuel Filter Filter Media High-Efficiency Cellulose/Synthetic Blend Brand iFJF OEM Cross-Reference 29531007, TP3018, 29539579, TP3012 Why Choose iFJF Fuel Filters? At iFJF, we understand that diesel engine reliability starts with clean fuel. Our filters are sourced from ISO-certified manufacturers and tested to meet or exceed SAE J905 fuel filter test standards. Whether you're maintaining a fleet of commercial trucks, running agricultural equipment, or servicing your daily driver, our filters provide the protection your engine deserves — at a fraction of dealership pricing. ✅ ISO 9001 certified manufacturing facilities ✅ Meets or exceeds OEM filtration efficiency (typically 98%+ at rated micron) ✅ Wholesale pricing with bulk discounts available ✅ Fast fulfillment from US warehouses ✅ 30-day satisfaction guarantee Frequently Asked Questions Q: How often should I replace this fuel filter?A: Diesel fuel filters should typically be replaced every 15,000-30,000 miles or every other oil change. For heavy-duty/commercial applications, follow your manufacturer's maintenance schedule. Signs of a clogged filter include rough idle, power loss, and decreased fuel economy. Q: Will this filter fit my vehicle?A: This filter is designed for GMC, Ram 2500HD, Duramax, Sierra, 2500, Silverado 6.6L 2001-2016. Please verify by cross-referencing your OEM part number or existing filter number with the replacement part numbers listed above. Q: Does this filter include a water separator?A: This model is designed for particulate filtration. For models with water separation capability, a drain valve is typically integrated into the housing. Q: Can I install this fuel filter myself?A: Yes, fuel filter replacement is a straightforward DIY job for most vehicles. Basic hand tools are sufficient. Always prime the fuel system after installation and check for leaks. If you're unfamiliar with the process, consult a professional mechanic. Q: What happens if I don't change my fuel filter on time?A: A clogged fuel filter restricts fuel flow to the engine, causing hard starting, rough idling, hesitation under load, and potentially severe damage to high-pressure fuel injection components. Regular replacement is far cheaper than injector or pump repairs. Explore Related Categories Fuel Filter — Browse our complete selection of fuel filter Filter — Browse our complete selection of filter Duramax 6.6L Parts — Browse our complete selection of duramax 6.6l parts 🔗 Duramax Diesel Resources 📖 Maintenance Guides: Duramax Fuel Filter Housing: Complete Compatibility Guide (2001–2024) 2001–2016 Duramax Fuel Filter Replacement: Complete DIY Guide Top 5 Diesel Fuel Filter Housing Problems (And How to Fix Them) Duramax 6.6L Oil Change: Complete DIY Guide (Every Generation) 🔍 Shop All Duramax 6.6L Parts → | Browse All Fuel Filters →

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  This filter is the external spin on type for the shallow and deep pan transmission Prevent abrasives other harmful particles from entering the vehicle,make the oil clean. Interchange Part Number: 29539579, 29531007, 29537268, BT8460, P550606, HF35247, P9264, 57701, P1276, LFH8737. Applies to Allison Transmission LCT 1000/2000/2400 series Compatibility LCT 1000/2000/2400 series Chevy Silverado/GMC Sierra 2500HD 3500 2001-2019 6.6L Chevy/GMC C2500 C3500 Pickups 2001-2003 6.6L Chevy Kodiak/GMC Topkick C4500 C5500 2001-2005 6.6L Hummer H1 2006-2007 6.6L Package include: 1pcs 29539579 Spin-on Oil Filter, 1pcs O-ring

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Fitment: Fuel filter Housing Cap for GM Duramax 6.6L L5P 2017-2020(Chevy Silverado/GMC Sierra 2500HD 3500HD),Cruze 2014-2015 2.0L,Cruze 2017-2019 1.6L. Replaces part number:134001. Material: Made of CNC Billet 6061-T6 Aluminum, more durable and longer using time than OEM cap. Advantage: This housing is engineered and manufactured to fit and function like the factory housing (while being much stronger),Won't easily to be cracked when installing/removing. Package includes:1 x fuel filter housing cap(Do not include O-ring),1 x drain plug.       Housing cover Our housing cap is carefully crafted with CNC billeted aluminum for longer-lasting durability and reliability.Your standard plastic cap would be easily cracked when over tightened or long term used.You can simply remove your old cap and screw your new cap on its place using a 1-7/16" socket wrench.Grooves on the side for easy removal and installation. Product Features & Specifications 🚗 Exact Fitment Compatible with GM Duramax 6.6L L5P 2017-2020 (Chevy Silverado / GMC Sierra 2500HD 3500HD). Also fits Cruze 2014-2015 2.0L and Cruze 2017-2019 1.6L. Direct replacement for OEM part number 134001 — no modifications required. 🔩 Upgraded Stainless Steel Drain Plug Equipped with a premium stainless steel drain plug that outperforms common aluminum plugs in corrosion resistance and longevity. Zero rust concerns, reliable draining every time. Lifetime warranty included on the drain plug screw accessory. 🛠️ CNC Billet 6061-T6 Aluminum Construction Precision-machined from aerospace-grade 6061-T6 billet aluminum — significantly tougher than the OEM plastic cap. Engineered to withstand repeated installation and removal cycles without cracking, stripping, or warping under high-heat diesel engine conditions. 📦 Package Contents 1 × Fuel Filter Housing Cap (O-ring not included) 1 × Stainless Steel Drain Plug ✅ iFJF Quality Promise Every cap undergoes precision machining and rigorous fitment testing before leaving the factory. We stand behind our manufacturing — if it doesn't fit perfectly, we'll make it right. ⚙️ Why Upgrade from OEM? The factory plastic housing cap is a known weak point on the L5P Duramax — prone to cracking during routine filter changes. Our billet aluminum replacement eliminates this failure point permanently while adding the convenience of a tool-free drain plug for mess-free oil changes. 🔗 L5P Duramax Resources 📖 Installation Guide: L5P Fuel Filter Housing Cap Replacement — Complete DIY Guide (2017–2020) — step-by-step, torque specs, CP4.2 protection. 🛒 TP1015 Replacement Fuel Filter Element — 5-micron absolute, 98% water separation, $19.99 🛒 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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iFJF A3231C Engine Air Filter — Keep Your Duramax L5P Breathing Clean Your 6.6L L5P Duramax moves upwards of 900 CFM at full boost. Every cubic foot of that air passes through the engine air filter before it hits the turbocharger. A clogged, cheap, or torn filter doesn't just choke power — it sends abrasive particulate straight into the compressor wheel, through the intercooler, and into your cylinders. The iFJF A3231C is a direct drop-in replacement for the OEM air filter on 2017–2019 Silverado & Sierra 2500HD/3500HD trucks. High-flow synthetic cellulose media. Precision-molded polyurethane perimeter seal. No tuning required. No fitment drama. Just cleaner air for a harder-working engine. 📊 iFJF A3231C vs. OEM ACDelco Air Filter Specification iFJF A3231C OEM ACDelco A3231C Filter Media High-Flow Synthetic Cellulose Blend Standard Cellulose Paper Media Layering Progressive-Density (Gradient) Single-Density Pleat Design Deep-Pleat, High Surface Area Standard Pleat Count Perimeter Seal Molded Polyurethane — No Bypass Foam / Rubber Gasket Airflow Restriction Low-Restriction at Rated CFM Standard Restriction Dirt-Holding Capacity Enhanced — Longer Service Life Baseline Price $29.99 $38–$55 🚛 Compatible Vehicles Chevrolet Silverado 2500HD / 3500HD 2017 · 2018 · 2019 6.6L L5P Duramax Turbo Diesel V8 GMC Sierra 2500HD / 3500HD 2017 · 2018 · 2019 6.6L L5P Duramax Turbo Diesel V8 ⚠️ Fitment Note: Confirmed for 2017–2019 L5P air filter housings only. Some 2020 models use a revised airbox design — verify your housing before ordering. Not compatible with 2011–2016 LML trucks. 🔢 Cross-Reference / Replaces OEM Part Numbers ACDelco: A3231C GM Genuine: 84262965 WIX: CA12258 Baldwin: LAF3231 Purolator: 33-5065 ⚙️ Technical Specifications Part Number A3231C (FJ-AF07) Dimensions 11" L × 11" W × 3" H Filter Media Progressive-Density Synthetic Cellulose Blend Pleat Design Deep-Pleat — Maximized Surface Area Seal Type Molded Polyurethane Compression Gasket Support Heavy-Gauge Expanded Metal Backing Service Interval Inspect 15K mi / Replace 30K mi (Normal) or 15K mi (Severe Duty) Installation Drop-in — Under 2 Minutes, No Tools Required 🛠️ Installation — 90-Second Drop-In OPEN THE AIRBOX: Release the 4 spring clips on the factory air filter housing. Lift the lid enough to access the old filter. REMOVE OLD FILTER: Pull the old filter straight out. Note which side faces up (the dirty side will be darker). INSPECT THE AIRBOX: Wipe out any debris, leaves, or sand from the bottom of the airbox with a shop rag. Check that the airbox drain hole isn't plugged. DROP IN THE A3231C: Seat the filter with the polyurethane gasket facing the clean-air side (toward the intake tube). The gasket compresses when you close the lid — that's your seal. CLOSE AND CLIP: Press the lid down evenly and re-engage all 4 spring clips. Give it a wiggle — the lid should be tight with no gaps. ❓ FAQ Q: Will this fit my 2020 Silverado 2500HD L5P?A: Maybe not. GM revised the air filter housing on some 2020 L5P trucks. The A3231C is confirmed for 2017–2019 model years. Check your existing air filter part number — if it's stamped A3231C or 84262965, this fits. If it's a different number, your truck may use the revised housing. Q: How often should I replace the air filter?A: GM recommends inspection at every oil change and replacement at 30,000 miles. In practice, if you tow, drive gravel, or operate in dusty conditions (construction, agriculture, Southwest desert), replace every 15,000 miles. A $28 filter is cheap insurance against a dusted turbo or scored cylinder walls. Q: Will this air filter give me more horsepower?A: The A3231C is not a "performance" filter in the oiled-cotton sense — it's an OEM-spec replacement engineered for better filtration at equal or lower restriction. On a dyno, you won't see a horsepower gain. What you will get is cleaner intake air, longer turbo life, and the confidence that your filter media isn't collapsing under high boost. For a true high-flow upgrade on a tuned truck, aftermarket intake systems exist — but for a stock or lightly modified daily driver or tow rig, this is the filter you want. Q: Will using an aftermarket air filter void my warranty?A: No. The Magnuson-Moss Warranty Act protects your right to use aftermarket replacement parts. The iFJF A3231C meets or exceeds GM's filtration and airflow specifications. As long as the filter itself doesn't cause a failure (and it won't — it's a direct dimensional and performance equivalent), your warranty is safe. Q: What's the micron rating on this filter?A: The A3231C uses progressive-density media — the outer layer captures 20+ micron particles (visible dust, pollen, insects) while the inner layer traps sub-10-micron particulate. This staged filtration approach balances airflow with protection, matching the L5P's factory-engineered filtration requirements. 🛒 Complete Your L5P Maintenance Need the fuel filter too? TP1015 + A3231C Air Filter Combo — both filters in one order, one shipping charge Just the fuel filter? TP1015 Fuel Filter — 5-micron absolute filtration for your CP4.2 pump Upgrade your fuel filter cap? Silver 134001 Billet Cap + TP1015 Kit — fix the brittle OEM plastic cap permanently 💡 TIP: A dirty air filter doesn't just hurt performance — it increases fuel consumption. A restricted filter forces the turbo to work harder to pull air, which the ECM compensates for with more fuel. Keep your A3231C clean, and your Duramax will return better MPG. 🔗 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 Replacement Fuel Filter Element — 5-micron absolute, 98% water separation, $19.99 🛒 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 🛒 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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