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. By drawing coolant from the radiator and pushing it through the engine, the water pump helps prevent overheating, which can lead to severe engine damage. Typically driven by a belt connected to the engine, water pumps can be mechanical or electric. 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.