Fuel Filters & Water Separators
Diesel Fuel Filters and Water Separators — OEM-grade primary and secondary fuel filters for Power Stroke, Cummins, and Duramax engines. Water contamination is the leading cause of common-rail injector failure. The right filter at the right interval is the cheapest insurance for a diesel.
Fuel Filters by Engine
- 6.7L Power Stroke: primary and secondary spin-on; change every 15,000 miles
- 6.4L Power Stroke: cartridge primary; change every 10,000 miles
- 6.0L Power Stroke: Motorcraft FD-4615; 15,000-mile interval
- 6.7L Cummins: Fleetguard FS1003 primary and FF5612 secondary; 15,000 miles
- 5.9L Cummins: Fleetguard FS1212; 15,000 miles
- LB7/LBZ/LMM Duramax: CAT water separator + secondary; 15,000 miles
- LML Duramax: Fleetguard FS19532; 15,000 miles
- L5P Duramax: primary fuel filter/water separator; 20,000 miles
Common-rail systems run at 20,000+ PSI. A clogged filter introduces water and particulates that score injector tips and damage CP3 or CP4 pump internals — a repair costing thousands. A $15 filter change prevents it. All filters ship fast. Free shipping over $70.
