The OTR Water Pump ensures Expertise Built In™ with its design to deliver safety and reliability, while boosting your engine's temperature maintenance. This heavy duty water pump replacement undergoes extensive testing to ensure it meets or exceeds OEM performance, including: hub shaft force testing to 1,800 ft-lbs, bearings housing force testing to 1,500 ft-lbs, and impeller/shaft press fit torque testing to 200 in-lbs. In addition, the core and surface are Rockwell hardness tested, and careful leak testing serves to ensure 100% leak-free protection. We take engine overheating seriously; with OTR water pumps boasting of hardware including OE specified bearings, unitized seals, high quality gaskets, and accessories to ensure proper function, fit, and form, you can too. This heavy duty water pump design delivers safety and reliability while boosting your truck engine's temperature maintenance. The OTR Water Pump for CUMMINS ISX, 1SZ (2007-2017) is made for the most demanding, heavy duty engine cooling needs. FleetPride is your First Click in Heavy Duty®.