Diesel Fuel Filters

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

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

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

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