The water pump is a crucial component of a vehicle's cooling system. Its primary function is to circulate coolant through the engine, radiator, and heater core, ensuring that the engine operates at an optimal temperature. When the engine runs, the water pump is driven by a belt connected to the crankshaft. A well-functioning water pump helps prevent overheating, which can cause severe engine damage. Common signs of a failing water pump include coolant leaks, unusual noises, and engine overheating. Regular maintenance and timely replacement of a worn water pump can extend the life of the engine and improve overall vehicle performance.