The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant throughout 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 through the engine block, absorbing heat. This process helps prevent overheating, which can lead to severe engine damage. Regular maintenance, such as checking for leaks and ensuring proper fluid levels, is essential for the water pump's longevity. A malfunctioning water pump can cause engine overheating, making it vital to address any signs of wear promptly.