This water pump circulates coolant through the engine block and radiator to maintain the engine's operating temperature. It is driven by the engine's accessory belt and mounts directly to the engine block. A failing pump typically produces a coolant leak from the weep hole or a grinding noise from the bearing, which can lead to overheating if not replaced. The pump is manufactured to match the original impeller diameter and housing geometry, so the coolant flow rate and pressure remain within the system's design parameters. When installing, use a new gasket and torque the mounting bolts to the specification for the engine.