For Sherwood M70 M71 Cummins Diesel Engine. for Used on various 4 cylinder Cummins diesel engines. Type:Water Pump. 1X Water Pump. for Engine Model(s): 4B3.9M, 4B3.9D(M), 4BT3.9M, 4BT3.9-D9(M), 4BTA3.9M, 4B5.9M, 6B5.9M, 6B5.9-D(M), 6BT5.9M, 6BT5.9-D(M).