A NEW WATER PUMP FOR M939 SERIES A2 MODEL TRUCKS WITH THE TURBOCHARGED 8.3 CUMMINS 6CTA8.3 ENGINE.

THIS PUMP INCLUDES THE O-RING SEAL FOR INSTALLATION.

O-RINGS ARE ALSO AVAILABLE SEPARATE, # 3902089 IF YOU JUST NEED AN O-RING

**NEW UNIT, NO CORE REQUIRED**

PART NUMBER 3806180 (REPLACES 3802081). NSN 2930012688751.

THIS WILL NOT FIT THE A1 MODELS WITH THE NHC-250 CUMMINS MOTOR. I DO HAVE A PUMP FOR THOSE ENGINES IF YOU ARE IN NEED. SEE ITEM # AR4284