The water pump is a vital 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 heads, absorbing heat. This heated coolant then returns to the radiator, where it releases heat before circulating back to the engine. A malfunctioning water pump can lead to engine overheating, potentially causing severe damage. Regular maintenance and timely replacement of a faulty water pump are essential for ensuring engine longevity and performance.