Engine Water Pump – ACDelco (252-138)

Engine Water Pump maintains flow or pressure in a closed circuit. Restrictions elsewhere in the circuit produce the same symptoms as a worn pump, so both have to be checked.

Replace the Engine Water Pump when a pressure gauge shows a drop under load, or when the pump has been run dry. Running dry scores the internals beyond recovery.

Reference number for the Engine Water Pump: 252-138. It is filed under Water Pumps, and it is the number that has to match the part coming off the vehicle.

Genuine ACDELCO part for the Engine Water Pump. Where the manufacturer has superseded a number, the current reference is the one that ships.