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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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 Products2500HD/3500HD · 2001–2024
Cummins 6.7L
Ram 2500/3500/4500/5500
2007.5+ · RV Generators
38 Products2007.5+ · RV Generators
Powerstroke
Ford F-250 to F-550 Super Duty
7.3L / 6.0L / 6.4L / 6.7L · 1995–2022
7 Products7.3L / 6.0L / 6.4L / 6.7L · 1995–2022
Maintenance Guides & Tips
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, by iFJF Direct Complete Guide: How to Rebuild Edelbrock 1406 and 1405 Carburetors (St
Table of Contents Introduction to Edelbrock 1406 and 1405 Carburetors When Should You Rebuild Your Carburetor? Essential Tools and Parts Needed Step-by-Step Rebuild Process Common...
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, by iFJF Direct How To Rebuild Edelbrock 1406 and 1405 Carburetors | Rebuild Kit Links
Table of Contents Introduction to Edelbrock 1406 and 1405 Carburetors When Should You Rebuild Your Carburetor? Essential Tools and Parts Needed Step-by-Step Rebuild Process Common...
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, by iFJF Team How to Install a Tachometer Gauge on Any Diesel Truck: 4-Wire Wiring Guide
If you drive an older diesel truck — especially one from the 1990s or early 2000s — you may have noticed something missing on your...
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, by iFJF Team Marine Fuel Water Separator Guide: Why Your Outboard Needs One and How to Choose
Why Water in Fuel Is the #1 Outboard Killer Every seasoned boater has a story — or knows someone who does. The engine sputters 3...
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, by iFJF Team Ford F150 F250 Bronco EGR Delete: Complete Guide (1986-1995) — Cost, Benefits & Installation
What is EGR and Why Delete It on Pre-96 Fords? If you own an OBS (Old Body Style) Ford truck — an F-150, F-250, F-350,...
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, by iFJF Direct HOW TO Avoid Issues Replace Duramax 3.0 Fuel Filter
How to Replace the Fuel Filter on Your Duramax 3.0 (L5P LM2/LZ0) — Complete Guide How to Replace the Fuel Filter on Your Duramax 3.0...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
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
R12T Fuel Filter Water Separator
★★★★★
It works great
"It works great"
— Kevin Alexis✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Worth the money
"Quality product, worth the money"
— Scout7✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Good quality product
"Fast shipping,easy to install"
— Elesio c.✓ 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
R12T Fuel Filter Water Separator
★★★★★
Best upgrade for my boat
"Excellent product, installed easily and does not leak. I can tell a huge difference in the way my outboard runs. The problems, missing and sputtering I thought were coming from water in the gas are completely gone. I would recommend this addition to anyone with a boat, no matter what size outboard."
— GG 1✓ Verified