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 LBZ or LMM - DSP 5 Switch - INSTALL & TROUBLESHOOTING
Home › News › How to Install a DSP 5 Switch on Your LBZ or LMM Duramax How to Install a DSP 5 Switch on...
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, by iFJF Direct RACOR SPIN-ON FUEL FILTER / WATER SEPARATOR R12T alternative m18 x 1.5
RACOR R12T Alternative Fuel Filter: The Complete Guide to Spin-On Diesel Fuel/Water Separators (M18 x 1.5 Thread) 🛒 Parts Used in This Guide 12642623 Fuel...
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, by iFJF Direct iFJF Bluetooth Kill Switch vs ISINFLASH vs Traditional Mechanical: Which Anti-Theft Solution Actually Stops Thieves in 2026?
iFJF Bluetooth Kill Switch vs ISINFLASH vs Traditional Mechanical: Which Anti-Theft Solution Actually Stops Thieves in 2026? Vehicle theft in the United States hit 1,020,729...
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, by iFJF Direct FASS vs AirDog Lift Pumps: Which Duramax Fuel System Upgrade Actually Saves Your CP4 in 2026?
FASS vs AirDog Lift Pumps: Which Duramax Fuel System Upgrade Actually Saves Your CP4 in 2026? If you own a 2001–2016 Chevy or GMC Duramax...
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, by iFJF Direct Bluetooth Battery Kill Switch: iFJF 250A vs Traditional Mechanical vs ISINFLASH — Which Anti-Theft Solution Actually Works?
Bluetooth Battery Kill Switch: iFJF 250A vs Traditional Mechanical vs ISINFLASH — Which Anti-Theft Solution Actually Stops a Thief? Car theft in North America hit...
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, by iFJF Direct FASS vs AirDog: Which Diesel Lift Pump Actually Makes Sense for Your Duramax?
FASS vs AirDog: The Diesel Lift Pump Decision That Actually Matters Here's the deal. Your Duramax came from the factory with a CP4 high-pressure fuel...
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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
★★★★★
Awesome
"Pretty easy to do yourself. Fit perfectly would buy again. "
— This is the worst machine✓ Verified
R12T Fuel Filter Water Separator
★★★★★
Worth the money
"Quality product, worth the money"
— Scout7✓ 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
★★★★★
good-buy
"look-good"
— Butch Goldthwait✓ Verified
Engine Oil Filter for Ram 3.0L
★★★★★
Much cheaper than parts store filters
"These filters are typically half the price of what can be found at an auto parts store. I installed two so far and had a look at them after the oil changes. They were still in one piece and in good sh"
— D. K.✓ Verified
CV52001 Crankcase Ventilation Filter
★★★★★
Excellent
"Excellent value for the price This filter is a cost-effective alternative to more expensive OEM options, making regular maintenance more affordable. 🔧 Good fit and compatibility It installs easily an"
— Oscar Vargas✓ Verified