FS36401 FUEL FILTER 10 MICRON FOR 1995-2005 T-SERIES T440 | IFJF DIRECT

iFJF part No.: FJ-FS36401. FS36401 Fuel Filter 10 micron for 1995-2005 T-Series T440 T601 ISX 400 ISX 600 2011 T-Series T403 T610 T610SAR T659 ISX 600 Replace K371004 Premium Fuel Filter Engineered for ISX 400, ISX 600 The FS36401 fuel filter delivers exceptional filtration performance for Cummins, Kenworth ISX 400, ISX 600. Built with high-efficiency media that removes 99.9% of water and contaminants, protecting your high-pressure common rail injection system from premature wear. Direct replacement for OEM specifications at a competitive aftermarket price. Key Features 10 Micron Filtration Multi-layer cellulose/synthetic media captures particles as small as 10 microns Water Separation Hydrophobic barrier strips emulsified water from diesel fuel, preventing injector corrosion OEM-Quality Construction Manufactured to ISO/TS 16949 quality standards with 100% end-of-line testing Direct Fit Precision-engineered to match OEM dimensions and mounting points no modifications required Corrosion Resistant Coated/plated components withstand diesel fuel, road salt, and moisture exposure Validated for Cummins, Kenworth Confirmed fitment across all listed applications Compatibility Make Engine Year Range Model Kenworth Cummins ISX 400 1995-2005 T440 Kenworth Cummins ISX 600 1995-2005 T601 Kenworth Cummins ISX 600 2011 T403 Kenworth Cummins ISX 600 2011 T610 Always verify fitment using the cross-reference part numbers below or contact our support team. Cross-Reference Part Numbers Brand Part Number Fleetguard FS36401 Fleetguard K37-1004 Baldwin BF7892 Donaldson P553404 WIX WF10011 Specifications Specification Value Part Number FS36401 Brand iFJF Filtration Rating 10 Micron (Nominal) Media Type Cellulose/Synthetic Blend Product Type Fuel Filter Application ISX 400, ISX 600 Vehicle Make Cummins, Kenworth Material Steel/Plastic Composite Country of Origin China (ISO Certified) Warranty 1 Year / Unlimited Mileage Installation Guide Relieve fuel system pressure Remove fuel cap and depressurize per vehicle service manual Remove old filter Unscrew filter housing cap, remove old element, drain housing into approved container Clean housing Wipe housing interior with clean lint-free cloth, inspect for debris or water Install new O-rings Lubricate new O-rings with clean diesel fuel, seat properly in grooves Insert new element Place new filter element into housing, ensuring proper orientation Reassemble and torque Reinstall cap to manufacturer torque spec (typically 25-35 Nm) Prime fuel system Cycle key to ON (not START) 3-5 times for 30 seconds each, or use manual primer pump Check for leaks Start engine, inspect housing and connections for fuel seepage Maintenance Schedule For optimal fuel system protection, replace your fuel filter every 15,000-25,000 miles (or every other oil change) under normal operating conditions. For severe service (heavy towing, dusty environments, high-idle operation), reduce interval to 10,000-15,000 miles . Always replace both primary and secondary filters as a set on two-stage filtration systems. Frequently Asked Questions Q: How often should I replace the fs36401 fuel filter? For ISX 400 applications, we recommend replacing the fuel filter every 15,000-25,000 miles under normal driving conditions, or every 10,000-15,000 miles for severe service (towing, dusty environments, extended idling). Always replace both primary and secondary filters as a set. Q: What are the symptoms of a clogged fuel filter? Common signs include: hard start