The water pump is a crucial component of a vehicle's cooling system. Its primary function is to circulate coolant throughout the engine, preventing overheating. By drawing coolant from the radiator, the pump sends it through the engine, where it absorbs heat. This heated coolant then returns to the radiator, where it is cooled down before circulating again. A well-functioning water pump ensures efficient engine performance and longevity. Common signs of a failing water pump include coolant leaks, unusual noises, and engine overheating. Regular maintenance and timely replacement of the water pump can help avoid serious engine damage and costly repairs.