Factory-Direct Diesel Filtration for American Trucks, Boats & RVs
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- 🏭 20+ Years Manufacturing
- 📋 IATF 16949 Certified
- ⭐ 4.9★ on Amazon (3,200+ Reviews)
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No middleman markup. We design, manufacture, and ship from our own facility. Since 2009.
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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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Maintenance Guides & Tips
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, by Shopify API R12T vs R12H Fuel Water Separator: Real Customer Review (20K+ Views) + Installation Guide
A real iFJF customer's 20,000-view YouTube review of the R12T fuel water separator — installed on a 1978 Jeep in under 10 minutes. Full walkthrough,...
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, by William Lee Duramax 6.6L L5P Fuel Filter Replacement: Complete Step-by-Step Guide
Duramax 6.6L L5P Fuel Filter Replacement: Complete Step-by-Step Guide Last updated: June 4, 2026 The Duramax 6.6L L5P diesel engine — found in 2017-2020 Chevrolet...
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, by iFJF Team Ram 6.7L Cummins Fuel Filter Replacement: Complete Step-by-Step Guide (2013–2018)
Complete guide to replacing both fuel filters on 2013-2018 Ram 2500/3500/4500/5500 6.7L Cummins. Front (68157291AA) + Rear (68197867AA) step-by-step with CP4.2 pump protection tips.
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, by iFJF Direct Duramax L5P Fuel Filter Replacement: Why the OEM Plastic Cap Fails (and How to Fix It Forever)
The 2017-2020 L5P Duramax fuel filter cap is a known failure point. Our guide explains why the OEM plastic cap cracks, how a 6061-T6 billet...
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, by William Lee Complete Diesel Truck & RV Maintenance Schedule 2026: Air, Oil & Fuel Filter Guide
Complete Diesel Truck & RV Maintenance Schedule 2026: Air, Oil & Fuel Filter Guide Keeping your diesel truck or RV in peak condition isn't just...
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, by William Lee Cummins Onan RV Generator Maintenance: Complete Oil Filter & Spark Plug Replacement Guide
Complete guide to maintaining your Cummins Onan RV generator — oil filter changes, spark plug replacement, and full maintenance schedule.
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Browse All ProductsWhat Real Diesel Owners Say
4.9★ average from 3,200+ verified reviews — Factory-direct, tested by real mechanics & fleet owners
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★★★★★
"Was getting the 'DEF system service required' warning. Swapped this filter kit and cleared the codes — hasn't come back in 3 weeks. Saved me a $400 dealership diagnostic fee."
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★★★★★
"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 — definitely beats the dealership price."
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★★★★★
"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."
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★★★★★
"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. Still in one piece and in good shape."
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★★★★★
"Been using these on my 2015 F350 6.7L for 3 oil changes now. Cut open the first one after 5K miles — filter media was intact and clean. No bypass valve issues. OEM quality without the OEM price."
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★★★★★
"This is the oil filter for a 2015 ecodiesel V6 — it fits and is cheaper than Mopar. These worked great. Already ordered another set for the next change."