Fleetguard FS20207 Fuel Water Separator | Replaces Paccar K371021

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Spin-on fuel/water separator (FS20207) for PACCAR MX-13 and Cummins X15/ISX15 engines used in Kenworth T680, T880 and Peterbilt 579, 567. Replaces PACCAR K371021/K37-1021 with synt hetic media that strips free water and fine particulates before they reach the high-pressure injection system. Specifications Manufacturer Fleetguard (Cummins Filtration) Part Number FS20207 Part Type Fuel/Water Separator, Spin-On Engine Compatibility PACCAR MX-13, Cummins X15, ISX15 Service Interval ~15,000 miles (varies by application) Cross References This part replaces or is equivalent to the following part numbers: PACCAR: K371021, K37-1021 Donaldson: P583177 Baldwin: PF46236 WIX: WF10566 NAPA: 600566 Luber-finer: L5113F Carquest: 96870 Applications This fuel/water separator fits the following engines: PACCAR MX-13 (2013–present) Cummins X15, ISX15 (2013–present) Representative vehicles using these engines: Kenworth T680, T880 (2013–present) Peterbilt 579, 567 (2013–present) Verify your engine and fuel filter housing before ordering to confirm fitment. Show more