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 Autolite 1100 Idle Circuit
Autolite 1100 Carburetor Idle Circuit: The Complete Guide Every Restorer Needs Published: July 30, 2026 Category: Carburetor Technical Guide Reading Time: ~8 min If you're...
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, by iFJF Direct Kohler Wellworth Triangle Toilet Tank Bolt Replacement: Stop the Leak With GP51487 Kit in 30 Minutes
Kohler Wellworth Triangle Toilet Tank Bolt Replacement: Stop the Leak With GP51487 Kit in 30 Minutes Water puddling around the base of your Kohler Wellworth...
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, by iFJF Direct WFCO WF-8955 MBA RV Converter Board Replacement: Fix Dead Batteries and Flickering Lights in an Hour
WFCO WF-8955 MBA RV Converter Board Replacement: Fix Dead Batteries and Flickering Lights in an Hour The WFCO WF-8955 is the most common power center...
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, by iFJF Direct RV VacuFlush Toilet Bowl Seal Replacement: Fix That Leak and Stop the Constant Pump Cycling
RV VacuFlush Toilet Bowl Seal Replacement: Fix That Leak and Stop the Constant Pump Cycling If your RV toilet won't hold water in the bowl...
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, by iFJF Direct WFCO WF-8955 MBA RV Converter Board Replacement: 55-Amp Troubleshooting & Install Guide
Is Your WFCO WF-8955 Converter Really Dead? — Symptoms & Quick Voltage Test You plug your RV into shore power after a weekend of dry...
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, by iFJF Direct RV VacuFlush Toilet Seal Replacement Guide: 385311462 Kit for Dometic Sealand 110/210/510 — Stop the Odor & Leaks
Signs Your VacuFlush Toilet Seal Is Failing — And Why You Shouldn't Ignore It You walk into your RV after a weekend on the road,...
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Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
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
Engine Oil Filter for Ram 3.0L
★★★★★
These worked great
"This is the oil filter for a 2015 ecodiesel v6 it fits and is cheaper than mopar"
— B✓ 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
★★★★★
Just right
"Just right"
— Debbie✓ Verified
CV52001 Crankcase Ventilation Filter
★★★★★
Great quality for half the price!
"Product came in quick with Prime and fit perfectly! Looked up how-to on YouTube. Install took less than 30 min. Reset the perform service light with no issue! Will definitely be buying again when it’s"
— Mine✓ 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