... .3 engine. 2.OEM No. :3800984/ 4891252/ 3415366/ 3966841 Water PumpRemarks:1. Cummins Water Pump 2. P/NO: 3800984/ 4891252/ 3415366/ 39668413. Cummins packing, DCEC ... can have a chance to cooperate with each other. Cummins Water Pump 6BT, 6CT, B3.3, NT855, M11, K19, QSK19