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)
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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 SPELAB 4" Straight Pipe Kit Install 05 Dodge 3500 Cummins
How to Install a 4-Inch Straight Pipe Kit on Your 2005 Dodge 3500 Cummins – Full DIY Guide If you own a 2005 Dodge 3500...
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, by iFJF Direct Installing the EDGE CTS3 TUNER on My 2019 GMC Sierra Denali HD (L5P Du
How to Install the Edge CTS3 Evolution Tuner on a 2019 GMC Sierra Denali HD (L5P Duramax) L5P Duramax Edge CTS3 GMC Sierra Denali HD...
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, by iFJF Direct How To Perform A Cooling System Flush On Your Diesel Engine. Diesel E
Why Diesel Engine Coolant Flushes Matter More Than You Think If you own a diesel truck, RV, or any diesel-powered equipment, the cooling system is...
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, by iFJF Direct How to install Tie Rods on your GM Truck | Dmax XD Tie Rod Upgrade
Duramax Tie Rod Install: XD Heavy-Duty Upgrade Guide If your GM 2500/3500 wanders on the highway, your steering feels vague, or you've bent a stock...
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, by iFJF Direct Ball joint removal/install on 2018 ram 4500/5500 diesel.
The ball joints on a 2018 Ram 4500 or 5500 are no joke. They are big, they are stout, and because they sit at an...
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, by iFJF Direct Cummins Onan RV Generator Fuel Pump & Filter: 149-2341-01 Replacement Guide
Why Your Onan RV Generator Needs Regular Fuel System Maintenance Your Cummins Onan RV generator is the heartbeat of off-grid power — whether you're running...
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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
R12T Fuel Filter Water Separator
★★★★★
Fast delivery.
"Great filter for the price."
— oscar haaland✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Good quality product
"Fast shipping,easy to install"
— Elesio c.✓ 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
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