Application Summary: Cummins ISX / QSX Low Fan Mount. Help keep your investment running longer and efficient by installing a US Motor Works, 100% new water pump. US Motor Works new water pumps are designed and tested to meet or exceed OE specifications. US Motor Works water pumps start with a high quality, precision machined housing and contain the highest quality hubs, bearings, seals, and impellers to provide optimum cooling and longevity.