The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant throughout the engine, maintaining optimal operating temperatures. 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 the engine's crankshaft via a belt, the water pump operates continuously while the engine is running. Regular maintenance, including checking for leaks and ensuring proper coolant levels, is essential for the water pump's longevity and the overall health of the vehicle's engine.