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 iFJF EGR Simulator Eliminator vs Block-Off Plate: Which One Does Your Ford Actually Need?
EGR Simulator Eliminator vs. Block-Off Plate: Stop Guessing — Here's What Your Ford Actually Needs If you own a 1986–1995 Ford F-150, F-250, or Bronco...
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, by iFJF Direct iFJF Billet Aluminum vs OEM Plastic Fuel Filter Cap: L5P Duramax Comparison & Why It Matters
Why Your L5P's Plastic Fuel Filter Cap Is a Ticking Time Bomb If you own a 2017–2026 Chevy Silverado HD or GMC Sierra HD with...
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, by iFJF Direct Duramax Fuel Filter Housing Upgrade: iFJF 12642623 vs Dorman vs OEM — Which One Won't Leave You Stranded?
Duramax Fuel Filter Housing Upgrade: iFJF 12642623 vs Dorman vs OEM — Which One Won't Leave You Stranded? If you own a 2004-2013 Duramax —...
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, by iFJF Direct EGR Simulator or Block-Off Plate? Stop Guessing — Here's What Your Ford Actually Needs
EGR Simulator or Block-Off Plate? Stop Guessing — Here's What Your Ford Actually Needs Here's a scene I've watched play out a hundred times on...
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, by iFJF Direct Your L5P's Plastic Fuel Filter Cap Is a Ticking Time Bomb — Here's the Fix
Your L5P's Plastic Fuel Filter Cap Is a Ticking Time Bomb — Here's the Fix If you own a 2017-2020 Duramax L5P, walk out to...
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, by iFJF Direct FS1098 Fuel Water Separator Replacement for Cummins B6.7 & ISL8.9: Torque Specs, O-Ring Tricks, and What Actually Goes Wrong
FS1098 Fuel Water Separator Replacement for Cummins B6.7 & ISL8.9: Torque Specs, O-Ring Tricks, and What Actually Goes Wrong I've changed more fuel water separators...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
CV52001 Crankcase Ventilation Filter
★★★★★
Excellent
"Excellent product, I love it, it fits my car perfectly, I buy it oft "
— Belen Bartel✓ 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
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
R12T Fuel Filter Water Separator
★★★★★
Fast delivery.
"Great filter for the price."
— oscar haaland✓ Verified
R12T Fuel Filter Water Separator
★★★★★
good-buy
"look-good"
— Butch Goldthwait✓ Verified