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 Diesel Fuel Filter Replacement: The Complete Guide for Cummins, Powerstroke & CAT Engines
Diesel Fuel Filter Replacement: The Complete Guide for Cummins, Powerstroke & CAT Engines Your diesel engine's fuel filter is the cheapest insurance policy you'll ever...
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, by iFJF Team Duramax 6.6L Oil Change: Complete DIY Guide for Every Generation (2001–2024)
Complete Duramax oil change guide for LB7, LLY, LBZ, LMM, LML, and L5P engines. Includes oil capacity chart, filter recommendations, and 3 maintenance items to...
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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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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
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
Powerstroke Oil Filter
★★★★★
OEM quality without OEM price
"Been using these on my 2015 F350 6.7L for 3 oil changes now. Cut open the first one after 5K miles — filter media was intact and clean. No bypass valve issues."
— Dave H.✓ Verified
Fuel Filter — Cat / Cummins
★★★★★
Fleet-tested, fleet-approved
"We run 12 trucks with Cummins ISX engines. Switched to iFJF filters 6 months ago. Zero fuel system issues since. The cost savings over Fleetguard are substantial."
— Truck Shop Dave✓ Verified
CV52001 Crankcase Ventilation Filter
★★★★★
Great quality for half the price!
"Product came in quick with Prime and fit perfectly! Looked up how-to on YouTube. Install took less than 30 min. Reset the perform service light with no issue! Will definitely be buying again when it’s"
— Mine✓ Verified
DEF Pump Filter Kit
★★★★★
Fixed DEF warning instantly
"Was getting the 'DEF system service required' warning. Swapped this filter kit and cleared the codes — hasn't come back in 3 weeks."
— Tom P.✓ Verified
CV52001 Crankcase Ventilation Filter
★★★★★
Great!
"Works great. This is our second one. This installed easily and works like it should. Good price as well! "
— B West✓ Verified