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 operating temperature. When the engine runs, the water pump draws coolant from the radiator and pushes it through the engine, where it absorbs heat. The heated coolant then returns to the radiator to release the heat. A malfunctioning water pump can lead to overheating, which may cause severe engine damage. Regular maintenance, including checking for leaks and ensuring proper belt tension, is essential for the longevity of the water pump and the overall health of the vehicle.