The water pump is a crucial component of a vehicle's cooling system. Its primary function is to circulate coolant throughout the engine and radiator, ensuring that the engine maintains an optimal temperature. When the engine is running, the water pump pulls coolant from the radiator and pushes it into the engine, where it absorbs heat. This process prevents the engine from overheating, which can lead to severe damage. A malfunctioning water pump can cause overheating, reduced engine performance, and even engine failure. Regular maintenance and timely replacement of the water pump are essential for the longevity and efficiency of a vehicle.