The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant through 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, absorbing heat. This process helps prevent overheating, which can lead to severe engine damage. A malfunctioning water pump can cause coolant leaks, overheating, and decreased engine performance. Regular maintenance and timely replacement of the water pump are essential to keep the cooling system functioning effectively and to prolong the engine's lifespan.