Fleetguard FS53000 Fuel/Water Separator Filter
Fleetguard FS53000 Fuel/Water Separator Filter
Protect your diesel engine’s fuel system with the Fleetguard FS53000 Fuel/Water Separator Filter, engineered by Cummins Filtration for superior filtration and long-lasting performance. Designed to remove harmful contaminants and water from diesel fuel, this filter helps maintain fuel efficiency and engine reliability.
Key Features:
- Genuine Fleetguard FS53000 filter
- High-efficiency StrataPore™ media for advanced filtration
- Exceptional water separation and dirt-holding capacity
- Designed for primary or secondary fuel filtration
- Durable construction for harsh operating conditions
- Trusted by fleet operators, diesel technicians, and OEMs
Vehicle & Engine Compatibility:
Used in a variety of Cummins-powered trucks, buses, and heavy-duty equipment, including:
- Cummins ISX15, QSX15, X15, ISL9, ISC engines
- Applications in Freightliner, Kenworth, Peterbilt, Volvo, International, and more
- Commonly used in Class 8 trucks and off-highway machinery
🔍 Verify compatibility with your engine serial number or consult your service manual.
Cross Reference Part Numbers:
- Cummins: 5303741
- Donaldson: P552100
- Baldwin: BF7956-D
- WIX: 33674
- Napa: 3674
- Luber-Finer: LFF5826
What’s Included:
- 1x Fleetguard FS53000 Fuel/Water Separator Filter
- Sealed in OEM packaging for authenticity and protection
Installation Note:
- Designed for direct-fit replacement
- Replace at recommended service intervals or during scheduled maintenance
- Always prime fuel system after filter change
Shipping & Handling:
- Ships within 1–2 business days
- Tracked delivery across the USA
- Bulk orders welcome for shops and fleet operators
Maintain peak diesel performance with Fleetguard FS53000 – trusted filtration engineered by Cummins.
OEM Quality. Maximum Protection. Built for Work.
❓ FAQ
Q: Which specific Class 8 trucks and Cummins engine platforms is this fuel/water separator designed for?
A: The Fleetguard FS53000 is an exceptionally common heavy-duty spin-on filter cartridge designed primarily for large-displacement Cummins engines. It is a factory standard for the Cummins ISX15, QSX15, X15, ISL9, and ISC engine families. You will find this filter widely utilized across Class 8 commercial semi-trucks—including models from Freightliner, Kenworth, Peterbilt, Volvo, and International—as well as heavy off-highway industrial and construction machinery running these powerplants.
Q: What unique advantage does the StrataPore™ multi-layer media provide for my diesel fuel system?
A: Modern high-pressure common rail (HPCR) diesel systems operate under extreme pressures and have zero tolerance for water or fine debris. The proprietary StrataPore™ media utilizes a unique multi-layer synthetic design that features progressively finer fibers. This allows the filter to achieve high efficiency, stripping out microscopic particles while providing industry-leading water-coalescing performance. It forces tiny, suspended water droplets in the diesel fuel to bind together into larger drops so they safely settle out at the bottom of the canister instead of traveling downstream to erode your fuel injectors.
Q: What are the exact step-by-step instructions for replacing this filter and priming the fuel system?
A: Swapping out a heavy-duty spin-on fuel filter requires careful seal preparation and a thorough priming sequence to ensure the large fuel lines are completely purged of air before firing up the engine:
Locate the filter assembly on the side of the engine block or adjacent frame rail. Turn the plastic twist drain valve at the bottom of the filter counterclockwise to let all accumulated water and diesel fuel drain out completely into your container. If your truck uses an integrated Water-In-Fuel (WIF) sensor wiring harness at the bottom, snap the electrical connector off.
Fit a filter strap wrench around the upper portion of the canister body and turn it counterclockwise to break the seal. Spin the old filter completely off the threaded mounting stud, keeping it perfectly upright as you lower it out to avoid spilling any residual fuel or trapped sludge.
Check the threaded mounting stud on the engine head adapter to ensure the old rubber sealing gasket didn't stick to it. Wipe the flat metal sealing surface clean with a lint-free rag. If your application utilizes a reusable screw-in WIF sensor at the bottom of the filter, unscrew it from the old canister, clean it, fit a new rubber O-ring, and thread it firmly into the bottom of the new FS53000 canister.
Take your new Fleetguard filter and fill it up with clean, fresh diesel fuel through the outer perimeter inlet holes (not the center hole) before installing it—this prevents introducing a massive air pocket into the fuel system. Lightly coat the upper rubber sealing gasket with a thin film of clean engine oil or fuel. Spin the new filter onto the mounting stud clockwise until the gasket makes flush, flat contact with the base, then hand-tighten it an additional 1/2 to 3/4 turn. Reconnect the WIF sensor wiring harness.
Turn the truck's ignition key to the "RUN/ON" position without cranking the motor. You will hear the electric lift pump hum as it circulates fuel and forces any residual air bubbles through the return lines back to the fuel tank. Leave the key in the "RUN" position for 30–45 seconds. Cycle the key off and repeat this process 3 to 5 times. Start the engine, let it idle smoothly, and visually check the filter base for any signs of a leak.