The water pump is a crucial component of a vehicle's cooling system. Its primary function is to circulate coolant from the engine to the radiator and back, ensuring that the engine operates at an optimal temperature. When the engine heats up, the water pump pushes the coolant through the engine block, absorbing heat. The heated coolant then flows to the radiator, where it dissipates heat before returning to the engine. A malfunctioning water pump can lead to engine overheating, which may cause severe damage. Regular maintenance and timely replacement of the water pump can enhance engine performance and longevity.