Marine Water Sea Pump for Sherwood M70 M71 Cummins Diesel Engine 4BT 4B. We know our products. Always the correct part. 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). For Used on various 4 cylinder Cummins diesel engines. For Sherwood M70 M71 Cummins Diesel Engine. 3912019,3907458, M70, M71, JPR-C1025. Port Size (Outside Diameter) 1 1/4 or 32mm. This is a High Quality Aftermarket Parts. This product comes with best after-sales service. Professional Installation Is Highly Recommended. Even if your Boat is shown in the compatibility, pls also double check the fitment details and photos before ordering. OTHER ITEMS YOU MIGHT ALSO LIKE. Electric Fuel Pump Assembly for Jeep Cherokee KL V6 3.2L FWD 14-22 P77011M. Front Prop Drive Shaft for Ford F250 F350 F450 F550 Super Duty V8 7.3L 4WD Auto. Blade Spindle for John Deere LA125 LA130 LA135 LA140 GY20454 GY21098. 12V Electric Tilt Trim Motor Set for Lenco XD Trolling Tab Actuator 15060-001.