The water pump is a crucial component of a vehicle's cooling system. Its primary function is to circulate coolant throughout the engine, helping to maintain an optimal operating temperature. When the engine runs, the water pump draws coolant from the radiator and pushes it through the engine block and cylinder heads. This process prevents overheating and ensures efficient engine performance. A malfunctioning water pump can lead to severe engine damage, making regular maintenance essential. Signs of a failing water pump include coolant leaks, unusual noises, and overheating. Keeping the water pump in good condition is vital for the longevity of the vehicle.