Sherwood M71 Engine Cooling Pump. Replaces Cummins 3907458 and 3912019. Also Replaces Sherwood M70. Cummins 4-Cylinder diesel Model 210-B. Inlet: 1-1/4", Outlet: 1-1/4". Mounting Gasket CUM3008400. Impeller Kit SHR10615-K.