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 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 How to Install a 3" Body Lift on a 1995 Ford F-150 (OBS 2WD) — Complete Guide
Complete step-by-step guide to installing a 3-inch body lift on a 1995 Ford F-150 (OBS 2WD). Based on real hands-on install covering cab bolts, steering...
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, by iFJF Direct Chevy Express / GMC Savana Duramax Diesel Van Maintenance: The Complete Filter & Fluid Guide
Complete Chevy Express & GMC Savana Duramax diesel van maintenance guide. Filter replacement schedules, common problems, and OEM cross-references (A3140C, A2959C).
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, by iFJF Direct A2959C Air Filter Replacement Guide: Chevy Express & GMC Savana 2500/3500/4500 Duramax Diesel Vans
Replace your Chevy Express or GMC Savana Duramax air filter with A2959C. Cross-reference: CA5370, P611720, 49154. Fits 2006-2016 2500/3500/4500 vans.
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, by iFJF Direct Cummins ISX 11.9L Crankcase Breather Filter Replacement Guide: Why It Matters & When to Replace
Learn why regular Cummins ISX crankcase breather filter replacement prevents costly engine damage. Complete guide with cross-reference: 904-7904, CV50634, CV50617.
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, by iFJF Direct Best Water Separator Fuel Filter for Diesel & Marine Engines — Complete 2026 Buying Guide
A quality fuel water separator is the cheapest insurance for your diesel engine. We compared the top 5 water separator fuel filters for 2026 and...
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, by iFJF Direct 2006-2007 LBZ Duramax Cold Air Intake Install Guide
Upgrading the cold air intake on your 2006–2007 Chevrolet or GMC Duramax 6.6L (LLY/LBZ) is one of the most rewarding bolt-on jobs you can do...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
R12T Fuel Filter Water Separator
★★★★★
"Kubota bx owners GO FOR IT!!"
— pamela cookinham✓ Verified
Engine Oil Filter for Ram 3.0L
★★★★★
Much cheaper than parts store filters
"These filters are typically half the price of what can be found at an auto parts store. I installed two so far and had a look at them after the oil changes. They were still in one piece and in good sh"
— D. K.✓ Verified
R12T Fuel Filter Water Separator
★★★★★
It works great
"It works great"
— Kevin Alexis✓ Verified
R12T Fuel Filter Water Separator
★★★★★
good-buy
"look-good"
— Butch Goldthwait✓ 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