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)
- 💰 Factory-Direct Pricing
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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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Maintenance Guides & Tips
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, by iFJF Direct How-to replace & rebuild the diesel fuel filter head on a Duramax engi
How to Replace & Rebuild the Duramax Fuel Filter Head — Complete Step-by-Step Guide If your Duramax is leaking fuel near the filter housing, struggling...
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, by iFJF Direct Leveling Kit vs Lift Kit: What Your Diesel Truck Really Needs
Leveling kit or lift kit? We break down cost, installation, tire clearance, ride quality, and towing impact so you can make the right call for...
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, by iFJF Direct 2001-2016 Duramax Diesel Fuel Filter Replacement: Complete DIY Guide (With NAPA 3960)
Step-by-step Duramax fuel filter replacement guide for 2001-2016 6.6L engines. Covers inner fender removal, water sensor disconnect, O-ring lubrication, and priming procedure.
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, by iFJF Team Duramax Fuel Filter Housing: Complete Compatibility & Replacement Guide (2001–2024)
Complete guide to Duramax fuel filter housing compatibility, replacement, and upgrades for all generations from 2001 LB7 through 2024 L5P. Covers OEM cross-reference numbers, common...
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, by iFJF Direct How to Install a Universal Tachometer in Your Classic Car or Truck — Step-by-Step Wiring Guide
Learn how to install a universal 2-inch (52mm) tachometer in your classic car or diesel truck. Step-by-step wiring guide covering GM HEI, canister coil, MSD...
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, by iFJF Team RV Awning Sun Shade Review: iFJF 9'x7' Black Mesh Screen — 5-Minute Install, Instant Privacy & UV Protection
We pulled into Carolina Pines at high noon. Dashboard read 101 degrees. The kind of heat where the asphalt shimmers and your flip-flops feel like...
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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
CV52001 Crankcase Ventilation Filter
★★★★★
Excellent
"Excellent value for the price This filter is a cost-effective alternative to more expensive OEM options, making regular maintenance more affordable. 🔧 Good fit and compatibility It installs easily an"
— Oscar Vargas✓ Verified
RV Water Heater Thermostat
★★★★★
Fixed our camper's hot water
"Our Atwood water heater kept tripping the ECO. Swapped this thermostat assembly in 15 minutes with basic tools. Water heats perfectly now. Saved $200 vs a mobile RV tech."
— Karen S.✓ Verified
Cummins Fuel Water Separator
★★★★★
Beats the dealership every time
"Running these on my 2018 Ram 3500 Cummins. Change them every other oil change and they catch a shocking amount of water. Engine runs smoother with clean fuel."
— Chris T.✓ 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
Air Filter — Duramax 6.6L
★★★★★
Noticeable improvement
"Put this in my 2019 Silverado 2500HD. Better throttle response and seeing about 1.5 MPG gain on the highway. The old filter was way dirtier than I thought."
— Ron P.✓ Verified