L5P Duramax Pinned OEM Impeller Water Pump

Increase the reliability of your L5P Duramax cooling system with the Square Root Fabrication Modified Factory Water Pump. Starting with a genuine OEM water pump, SRF drills and pins the factory impeller directly to the shaft for improved retention and durability.

Designed for high-performance and demanding Duramax applications, this modified factory water pump provides added security while maintaining the OEM design. Ideal for tuned trucks, high-horsepower builds, heavy towing applications, and competition vehicles where reliable coolant circulation is critical.