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 The TRUTH about EGR DELETES... Actual Science!
Home › News › EGR Delete: Complete Science Guide EGR Delete on Diesel Trucks: The Complete Science-Based Guide (2025) 🛒 Parts Used in This Guide...
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, by iFJF Direct 122-0836 Oil Filter for Onan RV Generators — Buying Guide & Cross-Reference
Complete buying guide for the 122-0836 oil filter used in Cummins Onan QG 5500 and 7000 RV generators. Cross-reference, price comparison, and compatibility explained.
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, by iFJF Direct R12T Marine Fuel Filter Installation Guide: NPT & ZG1/4-19 Fittings, Torque Specs, and Pro Tips
Step-by-step R12T fuel filter installation guide covering NPT vs ZG1/4-19 fittings, proper torque specs, priming procedures, and common mistakes. Complete marine diesel fuel water separator...
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, by iFJF Direct R12T Fuel Filter Showdown: iFJF R12T vs Racor 120AT vs WIX 33583 — Which One Belongs on Your Boat?
Complete comparison of iFJF R12T vs Racor 120AT vs WIX 33583 fuel water separators. Compare price, filtration, fittings, and find which R12T filter is best...
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, by iFJF Direct How to Install a Bluetooth Battery Kill Switch on Your Diesel Truck: Complete Step-by-Step DIY Guide with App Pairing
Step-by-step DIY guide to install a Bluetooth battery kill switch on diesel trucks, RVs, and UTVs. Includes wiring, Bluetooth pairing, app setup, and troubleshooting.
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, by iFJF Direct How To: Ram 6.7L Cummins Change BOTH Fuel Filters
🛒 Parts Used in This Guide 6.7L Cummins Fuel Filter & Water Separator Kit for Ram 2500 $36.00 Shop Now → 68157291AA 68436631AA Fuel Filter...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
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
R12T Fuel Filter Water Separator
★★★★★
fast shipping
"great price"
— chris ollis✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Replaced the original to this.
"The original on my cub cadet was a piece of trash, this new one is great! And easy to install."
— Debora✓ Verified
Engine Oil Filter for Ram 3.0L
★★★★★
Easy to install
"The filter fit fine changing my oil on my 2018 RAM ecodiesel engine."
— MRG✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Perfect
"Works great"
— Elmer McGill✓ 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