The Edelbrock Victor Series Water Pump provides maximum cooling for the street and the racetrack. They are ideal in preventing overheating in street rods and street machines, as well as in tow rigs and motor homes. This water pump is 0. 625 inch diameter and has a right hand inlet with back plate with 5/8 pilot shaft. The dimension form casting to hub is 5. 42 and its inlet diameter is 1. 78. 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, cast iron impellers are larger than other impellers. They have curved vanes that produce greater flow with less cavitation. The hose fittings are included.