The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant through the engine and radiator, ensuring that the engine operates at an optimal temperature. When the engine runs, the water pump helps dissipate heat, preventing overheating and potential damage. Typically driven by a belt connected to the engine, the pump draws coolant from the radiator, pushes it through the engine, and then returns it to the radiator for cooling. Regular maintenance, including checking for leaks and ensuring proper function, is essential for the longevity and performance of the vehicle.