FS1098 Fuel Water Separator

The Fleetguard FS1098 is a premium, spin-on, heavy-duty diesel fuel/water separator filter manufactured by Cummins Filtration. It is engineered to remove emulsified water, free water, and microscopic particulate contaminants down to 10 microns, ensuring clean diesel fuel is delivered to your engine's injection system.

Engine & Vehicle Compatibility

This filter is standard equipment for:

• Medium-duty commercial vehicles, school buses, and construction machinery (2017 to 2021+ Cummins diesel powerplants).

Engine Models:

• Cummins B6.7, ISB6.7, QSB6.7, L9, ISL9, and ISL8.9 series.

Vehicle Makes:

• Freightliner, Wirtgen (models W100CFI, W120CFI, W130CFI), and various vocational trucks.

Technical Specifications

• Filter Media: Patented multi-layer StrataPore / NanoNet synthetic media.
• Micron Rating: 10-micron filtration efficiency.
• Efficiency: 98.7% particle removal efficiency; up to 95% emulsified water separation.
• Physical Dimensions: Height of 229 mm (9.02 in) and a maximum outer diameter of 120 mm (4.72 in).
• Key Features: Integrated water-in-fuel (WIF) sensor port connection, hydrostatic burst-resistant construction, and bottom drain valve.

Part Cross-References

If a genuine Fleetguard FS1098 is unavailable, it is compatible with the following part numbers:

• Cummins OEM: 5319680, 5308722, FS20038
• Baldwin: BF46160-SPS
• WIX: WF10716
• Luber-finer: LFF1098

Important Installation Tip

Always pre-fill the filter with clean diesel fuel on the "dirty" side (outer edge holes) before spinning it onto the housing. This prevents airlocks and facilitates system priming.

⚠️ Warning

This product can expose you to chemicals, including Lead and lead compounds, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.