Fleetguard FS19915 Fuel/Water Separator Filter – Pack of 6
Fleetguard FS19915 Fuel/Water Separator Filter – Pack of 6
Stock up and save with this 6-pack of Fleetguard FS19915 Fuel/Water Separator Filters, built by Cummins Filtration to deliver premium water separation and fuel system protection. Ideal for heavy-duty trucks, off-road equipment, and fleet service intervals.
Key Features:
- Includes 6x Fleetguard FS19915 filters
- OEM-grade, high-capacity water separator
- StrataPore™ multi-layer filtration media for efficient contaminant removal
- Effectively traps water, rust, and particulates from diesel fuel
- Designed for secondary fuel filtration
- Long service life under tough operating conditions
Vehicle & Engine Compatibility:
Designed for use with diesel engines including:
- Cummins ISX15, QSX15, X15
- Freightliner, Kenworth, Peterbilt, International, Volvo, and other Class 8 trucks with Cummins engines
- Also used in select heavy equipment and generators
🔍 Always verify compatibility with your engine serial number or consult your maintenance manual.
Cross Reference Part Numbers:
- Cummins: 4058965
- Baldwin: BF7885-D
- Donaldson: P552100
- WIX: 33784
- Napa: 3784
- Luber-Finer: LFF5879
What’s Included:
- 6x Fleetguard FS19915 Fuel/Water Separator Filters
- Individually boxed in OEM-sealed packaging
Shipping & Handling:
- Ships within 1–2 business days
- Fast, tracked shipping across the USA
- Volume discounts available for fleets and resellers
Get reliable protection and longer run-time with Fleetguard FS19915 — now in a value 6-pack.
OEM Quality. Bulk Value. Built for Cummins Power.
❓ FAQ
Q: Which specific Class 8 trucks and Cummins engine platforms is this filter pack compatible with?
A: The Fleetguard FS19915 spin-on fuel/water separator is engineered specifically for heavy-duty, large-displacement Cummins engines. It is a factory standard for the Cummins ISX15, QSX15, and the modern X15 engine platforms. You will find this filter setup widely used in heavy-duty Class 8 commercial semi-trucks—including models from Freightliner, Kenworth, Peterbilt, International, and Volvo—as well as industrial power generators and heavy construction equipment running these 15-liter powerplants.
Q: What advantage does the StrataPore™ multi-layer media provide for high-pressure fuel systems?
A: Modern 15-liter Cummins engines utilize high-pressure common rail (HPCR) fuel systems that operate at extreme pressures. Even microscopic particles of dirt or tiny drops of water can easily erode injector nozzles and cause costly failures. The proprietary StrataPore™ synthetic media utilizes a multi-layer design that layers progressively finer fibers. This creates a highly efficient barrier that traps fine contaminants while providing superior water-coalescing performance—binding tiny suspended water droplets together so they settle at the bottom of the canister instead of traveling downstream to the injectors.
Q: What are the exact step-by-step instructions for replacing this filter and priming a 15-liter Cummins engine?
A: Swapping out a heavy-duty spin-on fuel filter requires careful seal preparation and a thorough ignition-cycling sequence to ensure the large fuel lines are completely purged of air before firing up the truck:
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 FS19915 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.