Fleetguard Filter FS1000 Fuel Water Separator Filter For Cummins QSB6.7 Engines

A: The FS1000 is a heavy-duty filter widely used in large diesel engines. It is a standard requirement for Cummins N14, M11, ISM, ISX, ISC, ISL, and K19/QSK19 engines. It also fits Caterpillar C7, C9, C12, C13, and C15 series engines found in heavy trucks, power generators, and industrial machinery.

A: Yes, the FS1000 can directly interchange with the following industry part numbers:

Cummins / Fleetguard: 3329289, 3161407, 3406889, FS1212

Caterpillar: 256-8753, 226-6556

Donaldson: P551000, P550901

Baldwin: BF1259

WIX: 33406

If your current filter has one of these numbers, our FS1000 will be an exact match.

A: The FS1000 is simply a longer version of the FS1001. Both offer the same high-performance 10-micron filtration, but the FS1000 has a larger body, providing more dirt-holding capacity and a longer service life for demanding systems.

A: The FS1000 uses advanced StrataPore™ multi-layer media to deliver premium protection:

Micron Rating: 10 Microns at 98.7% efficiency (complies with SAE J1985).

Water Separation: Removes 95% of both free and emulsified water from diesel fuel, protecting your high-pressure injectors from corrosion and damage.

A: For highway trucks, we recommend replacing the filter every 15,000 to 25,000 miles, or every 300 to 500 operating hours for industrial generators and marine equipment. If your "Water-in-Fuel" warning light comes on or you notice a sudden drop in fuel economy/engine power, change the filter immediately.

A: Absolutely! Since the FS1000 is a high-turnover maintenance item, we offer specialized case-pack pricing (e.g., boxes of 12 or pallets) for commercial garages, fleet managers, and parts distributors. Please contact our sales team through the "Contact Us" page for a personalized wholesale quotation.