The water pump is a crucial component of a car's cooling system. It is responsible for circulating coolant throughout the engine and radiator, preventing overheating. As the engine runs, the water pump draws coolant from the radiator, pushing it through the engine to absorb heat. This process helps maintain an optimal operating temperature, ensuring efficient engine performance. A malfunctioning water pump can lead to engine overheating, which may cause severe damage. Regular maintenance, including checking for leaks and ensuring proper operation, is essential to keep the water pump functioning effectively and prolong the life of the engine.