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 pumping coolant from the radiator to the engine and back, it prevents overheating, which can lead to severe engine damage. Typically driven by a belt connected to the engine, water pumps can be mechanical or electric. Regular maintenance, including checking for leaks and ensuring proper operation, is essential for vehicle longevity. A failing water pump can cause engine overheating, so it’s important to address any signs of malfunction promptly.