Flow Kooler High Flow Aluminum Water Pump Buick 350

15Flow Kooler water pumps solve low-speed heating problems by doubling the water flow rate at low rpm and idle. At 3,500 rpm, the flow rate returns to normal to prevent too much water flow at high speeds. These pumps also last longer than a stock replacement. They use a new 16 blade CNC machined and military grade anodized aluminum impeller. This new impeller has an increased vane count which creates a substantial reduction in the plate-impeller clearance thus achieving greater flow rates, higher head pressure and a more efficient flow than the old Flow Kooler MiraKool design impeller.