WATER PUMP FOR M939A1 TRUCKS WITH THE NATURALLY ASPIRATED NHC-250 CUMMINS ENGINE. THIS PUMP INCLUDES THE GASKET.

THIS WILL NOT FIT M809 TRUCKS, OR M939A2 MODELS THAT HAVE THE 8.3 TURBO CUMMINS.

IF YOU NEED A PUMP FOR THOSE I CAN GET THEM FOR YOU.

NSN 2930008902440 PART #'S AR4284 BM78561 AR51546  AR50442.