Factory-Direct Diesel Filtration for American Trucks, Boats & RVs
Save 30-50% vs Dealership — IATF 16949 Certified Manufacturer
- 🏭 20+ Years Manufacturing
- 📋 IATF 16949 Certified
- ⭐ 4.9★ on Amazon (3,200+ Reviews)
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Why Choose iFJF Direct?
More than a store — we're the manufacturer.
Factory Direct
No middleman markup. We design, manufacture, and ship from our own facility. Since 2009.
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IATF 16949 & ISO 9001
Automotive-grade quality certified. Same standards trusted by global OEM manufacturers.
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4.9★ on Amazon
3,200+ verified reviews from diesel & RV owners who trust our quality and value.
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Shop by Engine
Find the right diesel filter for your truck — Duramax, Cummins, or Powerstroke
Duramax 6.6L
Chevrolet Silverado & GMC Sierra
2500HD/3500HD · 2001–2024
23 Products
2500HD/3500HD · 2001–2024
Cummins 6.7L
Ram 2500/3500 Heavy Duty
Pickup & Chassis Cab · 2007–2024
18 Products
Pickup & Chassis Cab · 2007–2024
Powerstroke
Ford F-250 to F-550 Super Duty
6.0 / 6.4 / 6.7L · 2003–2024
15 Products
6.0 / 6.4 / 6.7L · 2003–2024
Maintenance Guides & Tips
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, by iFJF Direct R12T Fuel Filter Cross Reference: Every Compatible Part Number (and Three That Don't Fit)
The verified R12T cross-reference list — Racor S3240 / 120AT, Sierra 18-7947 / 18-7987, WIX 33583, Baldwin BF1380, Fleetguard FS19802 and more — plus the...
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, by iFJF Direct How Often Should You Drain a Fuel-Water Separator? The R12T Draining, Maintenance & Water-Diagnosis Guide
How often to drain an R12T fuel-water separator, how to read the collection bowl, how to spot diesel bug, how to chase the air leaks...
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, by iFJF Direct 2024 POLARIS RANGER DOOR STRAP FIX! (upgrade) a better strap
🛒 Parts Used in This Guide 12642623 Fuel Filter Head + 1R-0750 Refit for 2005-2016 Dura $87.99 Shop Now → 1R-0750 Fuel Filter Aluminum Head...
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, by iFJF Direct Ford 6.0 Liter Powerstroke EGR Valve Installation
🛒 Parts Used in This Guide 11025 Diesel Fuel Tank Aux Mount Kit Ford F250 F350 1999-201 $73.99 Shop Now → 12642623 Fuel Filter Head...
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, by iFJF Direct iFJF 1403 Performer 500 CFM 4-Barrel Carburetor Installation Guide
Tools, torque sequence, fuel-pressure and choke-wiring specs for the iFJF 1403 500 CFM square-bore — plus the vacuum-port map that stops a hanging idle and...
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, by iFJF Direct iFJF diesel filter with R12T filter cartridge
Short answer: yes — a spin-on fuel-water separator such as the iFJF R12T swaps out the messy cartridge housing on most 2001-2016 Duramax 6.6L, 2003-2007...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
L5P Fuel Filter Kit
★★★★★
Saved $100 vs dealership
"Dealership quoted $180 for L5P fuel filter replacement. Bought this kit and did it myself in 30 minutes. For $40 you can't beat it."
— Jack W.✓ Verified
Marine Fuel Water Separator
★★★★★
Boating season essential
"Installed the R12H assembly on my 24' center console with a 250hp Yamaha. Clear bowl lets me see water contamination instantly. Way cheaper than the Yamaha branded unit."
— Captain Dan✓ Verified
7.3L Powerstroke Coolant Kit
★★★★★
Must-have for 7.3L trucks
"Wish I'd bought this years ago. My 2002 F350 has 220k miles. Installed in 45 minutes and the first filter caught a ton of crud. Cheap insurance."
— Scott E.✓ Verified
EGR Delete Kit — Duramax LBZ
★★★★★
Clean fit, immediate gains
"Installed on my 2007 Silverado Classic. Everything lined up perfectly. Noticeably better throttle response and about 2mpg improvement on the highway."
— Jay W.✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Good quality product
"Fast shipping,easy to install"
— Elesio c.✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Perfect
"Works great"
— Elmer McGill✓ Verified