1667 1968-1974 Opel "Hi Rise" water pump for Snow White Riser Kits

Air is a terrible heat exchanger and if you have the riser kit and are battling an intermittent overheating problem you may have trapped air.  We designed the Opel 1.9L pump used with the Riser kits like the Snow White Riser to generate higher pressure to squeeze out the air.  It has an increased vane count and a reduced impeller vane 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.  FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures. From 0-3,300 RPM…Nothing Beats a FlowKooler! CNC Machined aluminum impeller Protected with a military grade surface