The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant throughout the engine, helping to maintain an optimal operating temperature. By drawing coolant from the radiator and pushing it through the engine, the water pump prevents overheating and ensures efficient performance. Typically powered by a belt connected to the engine, the water pump operates continuously while the engine runs. Regular maintenance, including checking for leaks and ensuring proper fluid levels, is essential for the longevity of the water pump and the overall health of the vehicle's engine.