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
Shop by Category
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.
Learn About iFJF →
IATF 16949 & ISO 9001
Automotive-grade quality certified. Same standards trusted by global OEM manufacturers.
View Certifications →
4.9★ on Amazon
3,200+ verified reviews from diesel & RV owners who trust our quality and value.
Read Amazon Reviews →Trending Now
What shoppers are viewing right now — updated daily from live traffic data
$39.99
$39.99
$79.99
$19.99
$23.99
$55.99
Pool Parts
Factory-direct pool replacement parts for Intex, Hayward, Pentair, Polaris & more. Bulk orders welcome.
$19.99
$23.99
$29.99
$19.99
$19.99
Maintenance Guides & Tips
-
, by iFJF Direct ISINFLASH Smart Battery Kill Switch How To Installation
How to Install a Smart Battery Kill Switch: Complete Step-by-Step Guide (2026) How to Install a Smart Battery Kill Switch: Complete Step-by-Step Guide By iFJF...
-
, by iFJF Direct Ford 6.7 Powerstroke Diesel 2011-2016 Fuel Filters Replacement How-To
How to Replace Fuel Filters on a Ford 6.7L Powerstroke Diesel (2011–2016) If you own a 2011–2016 Ford F-250 or F-350 with the 6.7L Powerstroke...
-
, by iFJF Direct 2001-2016 Duramax Diesel Fuel Filter Replacement: Complete DIY Guide (With NAPA 3960)
Step-by-step Duramax fuel filter replacement guide for 2001-2016 6.6L engines. Covers inner fender removal, water sensor disconnect, O-ring lubrication, and priming procedure. NAPA 3960 compatible.
-
, by Shopify API Diesel Fuel Filter Maintenance — When to Replace Your Fuel/Water Separator (Duramax, Powerstroke & Cummins)
Diesel Fuel Filter Maintenance — When to Replace Your Fuel/Water Separator (Duramax, Powerstroke & Cummins) Is your diesel truck hard-starting, losing power, or throwing a...
-
, by iFJF Direct FASS vs AirDog: Complete Duramax Lift Pump Installation Guide
Complete step-by-step guide to installing a FASS or AirDog lift pump on 2001-2010 Duramax trucks. Covers LB7, LLY, LBZ, LMM engines with tools list, wiring...
-
, by iFJF Direct S3213 Upgrade Guide: Why the Replaceable Filter Pays for Itself in 2 Services
Compare the old sealed S3213 vs the new replaceable-element design. Real cost data shows the upgraded version pays for itself by the second service —...
Exclusive for Returning Customers
Already Bought From Us?
Welcome back! Reorder your filters, try a new category, or reach out for bulk pricing. Use code LOYAL15 for 10% OFF your next order.
One-time use per customer · For customers with previous orders only
Browse All ProductsWhat Our Customers Say
4.9★ average from 3,200+ verified reviews — Real feedback from real customers
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
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
Fuel Filter — Cat / Cummins
★★★★★
Fleet-tested, fleet-approved
"We run 12 trucks with Cummins ISX engines. Switched to iFJF filters 6 months ago. Zero fuel system issues since. The cost savings over Fleetguard are substantial."
— Truck Shop Dave✓ Verified
Powerstroke Oil Filter
★★★★★
OEM quality without OEM price
"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."
— Dave H.✓ Verified
7.3L Powerstroke Coolant Kit
★★★★★
Must-have for 7.3L trucks
"Wish I'd bought this years ago. My 2002 F350 has 220k miles. Installed in 45 minutes and the first filter caught a ton of crud. Cheap insurance."
— Scott E.✓ 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