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 maintains an optimal temperature. As the engine runs, it generates heat, and without proper cooling, it could overheat, leading to severe damage. The water pump is typically driven by the engine's crankshaft via a belt or chain. Regular maintenance, such as checking for leaks and ensuring the coolant is at the proper level, is essential for the water pump's longevity. A failing water pump can cause overheating, making it vital to address any symptoms early.