A water pump assembly (also called cooling water pump or centrifugal pump) is the core actuator of a diesel engine's forced-circulation cooling system, mounted at the front of the engine block and driven by the crankshaft pulley via the fan belt. Its working principle: the rapidly rotating impeller generates centrifugal force, drawing coolant from the inlet into the pump chamber, accelerating it through the volute, and pressurizing it out through the outlet into the block water jacket, then through the cylinder head, thermostat, and radiator for heat exchange before returning—forming a closed loop.
Material Description:
Water pump assembly 12159770 (spare parts)
