QSB 5.9 Series Coolant Pump Kit- PART #5473239

Cummins Marine OEM Coolant Pump. Fits QSB5.9 425HP and Above engines. The 425HP model engine depends on Serial Number, the pump switched sometime around 2008. If you have a QSB5.9 425HP we recommend you call with your serial number so we can ensure you order the correct part. Includes gasket.