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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Pool Parts
Factory-direct pool replacement parts for Intex, Hayward, Pentair, Polaris & more. Bulk orders welcome.
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Maintenance Guides & Tips
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, by iFJF Direct Chevy GMC 6.5L Diesel Fuel Filter Replacement Guide — Suburban Silverado Sierra Tahoe DIY
Video: How to replace the diesel fuel filter and bleed the air on a GM 6.5L V8 diesel engine — demonstrated on a 1999 Chevy...
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, by iFJF Direct How to install iFJF R12T Fuel Filter/Water Separator 120AT NPT ZG1/4-1
How to Install iFJF R12T Fuel Filter/Water Separator: Complete Step-by-Step Guide Protect your diesel engine from water contamination and extend its lifespan with the iFJF...
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, by iFJF Direct ISINFLASH Smart Battery Kill Switch How To Installation
How to Install a Smart Battery Kill Switch: Complete Step-by-Step Guide (2026) How to Install a Smart Battery Kill Switch: Complete Step-by-Step Guide By iFJF...
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, by iFJF Direct Ford 6.7 Powerstroke Diesel 2011-2016 Fuel Filters Replacement How-To
How to Replace Fuel Filters on a Ford 6.7L Powerstroke Diesel (2011–2016) If you own a 2011–2016 Ford F-250 or F-350 with the 6.7L Powerstroke...
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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. NAPA 3960 compatible.
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, by Shopify API Diesel Fuel Filter Maintenance — When to Replace Your Fuel/Water Separator (Duramax, Powerstroke & Cummins)
Diesel Fuel Filter Maintenance — When to Replace Your Fuel/Water Separator (Duramax, Powerstroke & Cummins) Is your diesel truck hard-starting, losing power, or throwing a...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
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
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
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
Engine Oil Filter for Ram 3.0L
★★★★★
Good price
"I have used this product for quite some time. Works well and good price"
— M. C. Koch✓ 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
★★★★★
Excellent
"Excellent product, I love it, it fits my car perfectly, I buy it oft "
— Belen Bartel✓ Verified