The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant throughout the engine and radiator, ensuring that the engine maintains an optimal temperature. A properly functioning water pump prevents overheating, which can lead to severe engine damage. Typically driven by the engine's crankshaft, the water pump consists of a rotor and a housing. Regular maintenance, including checking for leaks and ensuring proper coolant levels, is essential for the longevity of the pump. If a water pump fails, it can cause engine overheating and may require immediate replacement to avoid costly repairs.