The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant between the engine and the radiator, ensuring that the engine operates at an optimal temperature. When the engine runs, the water pump helps transfer heat away from the engine, preventing overheating. Typically driven by the engine's serpentine belt, the water pump can fail due to wear and tear, leading to coolant leaks or engine overheating. Regular maintenance, including checking coolant levels and inspecting the pump for signs of damage, is essential for keeping the cooling system efficient and prolonging engine life.