The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant throughout the engine and radiator, ensuring that the engine operates at an optimal temperature. When the engine runs, the water pump draws coolant from the radiator and pushes it into the engine block, where it absorbs heat. The heated coolant then returns to the radiator to be cooled down. A malfunctioning water pump can lead to engine overheating, which can cause severe damage. Regular maintenance, including checking for leaks and ensuring proper operation, is essential for vehicle longevity and performance.