1575 1965-1970 Oldsmobile 350,403, 455 5-1/8" tall for non ac water pumpFlowkooler High Flow pump for the Oldsmobile 455 engine has a CNC machined billet impeller designed with an increased vane count and a reduced plate to impeller clearance. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller color is due to Type II Class II military grade surface coating which protects against corrosive fluids. This pump is commonly found on cars without AC. The taller hub heights were used with