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, preventing overheating. The pump is typically driven by the engine's crankshaft via a belt or chain. As the engine runs, the water pump ensures that the coolant absorbs heat from the engine and releases it through the radiator. Regular maintenance of the water pump is essential, as a failure can lead to severe engine damage. Signs of a failing water pump include coolant leaks, unusual noises, and overheating. Keeping the cooling system in good condition is vital for vehicle longevity.