The water pump is a vital component of a car's cooling system. Its primary function is to circulate coolant throughout the engine and radiator, preventing the engine from overheating. The pump is typically driven by a belt connected to the engine's crankshaft. When the engine runs, the water pump moves coolant from the radiator to the engine, where it absorbs heat. Afterward, the coolant is returned to the radiator to be cooled again. Regular maintenance, including checking for leaks and ensuring the pump is functioning correctly, is essential for optimal engine performance and longevity. A failing water pump can lead to serious engine damage.