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 Duramax CAT Oil Filter Adapter Guide: 7791 13/16"-16 to 1-1/8"-16 Conversion — More Filtration, Better Engine Protection
The One Adapter That Changes How Your Duramax Filters Oil — Forever If you own a 2001-2016 GM Duramax 6.6L, you already know the factory...
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, by iFJF Direct Honda Accord 2.4L Cabin & Engine Air Filter Replacement Guide: CA10467 vs OEM 17220-R40-A00 — Save $80 in 15 Minutes
Why Your Honda Accord Deserves a Fresh Air Filter Every 15,000 Miles Your Honda Accord's 2.4L K24 engine is one of the most reliable four-cylinders...
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, by iFJF Direct Fix Your Kohler Rite-Temp Shower Valve: GP76851 Mixer Cap & Pressure Balancing Unit Replacement
Fix Your Kohler Rite-Temp Shower Valve: GP76851 Mixer Cap & Pressure Balancing Unit Replacement You know the drill. You're in the shower, someone flushes a...
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, by iFJF Direct Duramax CAT Oil Filter Adapter Install: Why the 7791 13/16"-16 to 1-1/8"-16 Thread Adapter Is Worth It
Duramax CAT Oil Filter Adapter Install: Why the 7791 13/16"-16 to 1-1/8"-16 Thread Adapter Is Worth It Here's a mod that costs under $40 and...
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, by iFJF Direct How to Replace Your Honda Accord 2.4L Engine Air Filter — 10-Minute Job, No Tools Required
How to Replace Your Honda Accord 2.4L Engine Air Filter — 10-Minute Job, No Tools Required If your 2008-2012 Accord 2.4L feels sluggish off the...
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, by iFJF Direct Mercruiser 4.3L V6 Marine Carburetor Replacement Guide: 3310-807764A1 Electric Choke Install & Tuning
If your Mercruiser 4.3L V6 is hard-starting, stumbling under throttle, or flooding at idle, the factory Mercarb 2-barrel carburetor has likely reached the end of...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
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
CV52001 Crankcase Ventilation Filter
★★★★★
Excellent
"Excellent product, I love it, it fits my car perfectly, I buy it oft "
— Belen Bartel✓ Verified
R12T Fuel Filter Water Separator
★★★★★
good-buy
"look-good"
— Butch Goldthwait✓ Verified
CV52001 Crankcase Ventilation Filter
★★★★★
Great!
"Works great. This is our second one. This installed easily and works like it should. Good price as well! "
— B West✓ Verified
RV Water Heater Thermostat
★★★★★
Fixed our camper's hot water
"Our Atwood water heater kept tripping the ECO. Swapped this thermostat assembly in 15 minutes with basic tools. Water heats perfectly now. Saved $200 vs a mobile RV tech."
— Karen S.✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Fast delivery.
"Great filter for the price."
— oscar haaland✓ Verified