The Albin Pump 05-01-059 is a high-quality flexible impeller seawater pump engineered specifically for Cummins marine engines. Built in marine-grade bronze and featuring a neoprene impeller, this unit is designed for continuous operation in tough marine environments.It fits directly on Cummins 4B3.9M, 4B3.9D(M), 4BT3.9M, 4BT3.9-D9(M), 4BTA3.9M, 4B5.9M, 6B5.9M, 6B5.9-D(M), 6BT5.9M and 6BT5.9-D(M) engines and is a direct replacement for OEM pump models 3907458 and 3912019. No modifications are required — just bolt on and go. Reliable, compact, and engineered for maximum cooling efficiency, this pump is ideal for both commercial vessels and recreational boats running Cummins diesel engines. Replaces JMP pump: JPR-C1015, and Sherwood Pump M71 and M70. Replacement impeller: N/Ref: 247028.