GMB 125-1420P High Performance Series Water Pump with Gasket Increase in pump pressure and water flow Eliminates steam pockets trapped inside the engine block Reduces engine temperature faster than standard water pumps Larger internal passages for maximum coolant Added material in critical stress areas for long life Increase in pump pressure and water flow Eliminates steam pockets trapped inside the engine block Reduces engine temperature faster than standard water pumps Larger internal passages for maximum coolant. This is a performance water pump with a high-strength bearing and/or high-volume impeller Added material in critical stress areas for long life