NEW Fleetguard 6pcs FS1098 5319680 Fuel water Separator Filter Freightliner. New FS1098 Fuel Water Separator for use on Cummins B6.7L, ISB6.7L, QSB6.7L and L9 Engines Model Year 2017 - 2021. Manufactured by Cummins Filtration Fleetguard, the OE Manufacturer of Cummins Engine Filtration.