Fleetguard FS53000 Fuel/Water Separator Filter

The Fleetguard FS53000 Fuel/Water Separator is a premium diesel fuel filter cartridge designed to provide efficient fuel filtration and water separation for compatible diesel engines. Fleetguard describes the FS53000 as a filter-in-filter, dual-stage fuel cartridge featuring NanoNet filtration media, designed to improve diesel fuel filtration and water-removal performance.

The FS53000 is particularly associated with Ram trucks equipped with the 6.7L Cummins diesel engine. Fleetguard identifies it as the filter-in-filter fuel/water separator for 2013-model-year Ram 6.7L applications and as an upgrade for certain 2010-model-year applications.

Product Features

• Brand: Fleetguard
• Part Number: FS53000
• Product Type: Fuel/Water Separator Cartridge
• Filter Media: NanoNet
• Design: Premium filter-in-filter, dual-stage cartridge
• Helps remove contaminants from diesel fuel
• Helps separate free and emulsified water
• Designed to protect sensitive diesel fuel-system components
• Free Water Separation: 99%
• Emulsified Water Separation: 98%
• Overall Height: 5.30 in / 134.63 mm
• Largest Outside Diameter: 4.28 in / 108.60 mm
• Gasket Inside Diameter: 1.05 in / 26.60 mm

Compatible Applications

Fleetguard's official equipment data lists the FS53000 for Cummins ISB 6.7 applications, including model years 2013–2016, with one filter required. Fleetguard also specifically describes the product for Ram 6.7L applications.

It is also the Fleetguard upgrade for FS43255, which Fleetguard identifies for Ram trucks with the 6.7L Cummins engine.

Advanced Fuel Filtration

The FS53000 uses Fleetguard's NanoNet media in a dual-stage filter-in-filter design. This construction is intended to provide effective diesel fuel filtration while improving water separation, helping deliver cleaner fuel to the engine. Fleetguard rates the filter at 99% free-water separation and 98% emulsified-water separation under its specified testing conditions.

Replacement / Cross-Reference Information

FS53000 is an upgrade for Fleetguard FS43255. Cross-reference listings also associate the FS53000 with Cummins 5260529, although cross-reference numbers should always be verified against the exact vehicle or equipment application.

Package Includes

• 1 × Fleetguard FS53000 Fuel/Water Separator Filter Cartridge

Important Fitment Note

Please verify the vehicle year, make, model, engine, and existing filter part number before ordering. Fleetguard's official information identifies specific Cummins and Ram applications, so compatibility should not be assumed solely from the part number.