The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant throughout the engine, preventing it from overheating. The pump draws coolant from the radiator and pushes it into the engine block, where it absorbs heat. Once the coolant reaches a certain temperature, it flows back to the radiator to be cooled down. A well-functioning water pump ensures efficient engine performance and longevity. Common signs of a failing water pump include unusual noises, coolant leaks, and overheating engines. Regular maintenance and timely replacement can help avoid severe engine damage and costly repairs.