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 Bluetooth Kill Switch: Anti-Theft Battery Disconnect Guide
Install a Bluetooth kill switch on your car, truck, or RV in under an hour. Step-by-step wiring guide with torque specs, safety tips, and professional...
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, by iFJF Direct Bluetooth vs RF Remote Battery Disconnect: Which Is Better?
Bluetooth kill switch or RF remote — which remote battery disconnect is right for your vehicle? We compare security, range, current rating, and real-world reliability...
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, by iFJF Direct Why You Need a Bluetooth Kill Switch for Your RV or Truck
RV and truck owners: a Bluetooth kill switch protects against theft, prevents battery drain during storage, and gives you remote power control from your phone....
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, by iFJF Direct 1965-1967 Mustang 200ci Inline-6 Carburetor Replacement Guide
Replace the carburetor on your 1965-1967 Mustang 200ci inline-6 with this step-by-step guide. Tools, torque specs, and pro tips for a leak-free installation in under...
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, by iFJF Direct How to Tune an Autolite 1101 Carburetor on a Classic Ford Inline-6
Learn how to tune your Autolite 1101 carburetor for smooth idle, crisp throttle response, and maximum fuel economy. Step-by-step guide with factory specs for 1963-1967...
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, by iFJF Direct Autolite 1100 vs 1101 Carburetor: What's the Difference?
Confused between the Autolite 1100 and 1101 carburetor? Learn the key differences in venturi size, engine compatibility, and which one your classic Ford actually needs.
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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
★★★★★
Great Price.
"Was looking on ebay for this. But better price on Amazon. Amazon has everything you are looking for. Love It !"
— lisa✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Perfect
"Works great"
— Elmer McGill✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Fast delivery.
"Great filter for the price."
— oscar haaland✓ Verified
L5P Fuel Filter Kit
★★★★★
Saved $100 vs dealership
"Dealership quoted $180 for L5P fuel filter replacement. Bought this kit and did it myself in 30 minutes. For $40 you can't beat it."
— Jack W.✓ Verified
RV Fleet — Bulk Order
★★★★★
Flawless fleet delivery
"Ordered 80 filters for our RV fleet shop. Every single one was consistent quality. Perform just like OEM at half the price. Now our standard supplier."
— Fleet Manager Mike✓ Verified
Cummins Fuel Water Separator
★★★★★
Beats the dealership every time
"Running these on my 2018 Ram 3500 Cummins. Change them every other oil change and they catch a shocking amount of water. Engine runs smoother with clean fuel."
— Chris T.✓ Verified