Proflows Ultra Cool II high-volume water pumps are designed for maximum flow and equal coolant distribution in street cars, race cars or any other application.The aluminum pumps have CNC-machined housings with special one-way internal passages that flow more coolant at higher velocities, even at low engine speeds. The CNC-machined impellers are larger than other impellers and have curved vanes that produce greater flow with less cavitation. Other features include heavy-duty roller bearing assemblies built to withstand higher torsional loads, billet steel hubs, leakproof seals, and gaskets. Most Victor Series pumps are available in your choice of Natrual; or Black Powdercoat.