16225 1978-1979 Big Block Chevrolet Mechanical Water Pumps

All pumps feature new castings, heavy-duty bearings, large-diameter shafts, and are direct factory replacements with oem hose connections and bosses. The high-volume pumps have a balanced distribution design and a high-efficiency impeller that increases coolant flow up to 30 percent over stock. These features increase coolant pressure in the block to prevent hot spots and air pockets and improve coolant flow in the radiator. A high-flow thermostat is recommended when using a high-volume pump. Features Mechanical water pumps. Compatibility 1978-1979 Big Block Chevrolet.