This NRF auxiliary water pump (part code 390080) is designed to circulate coolant within your vehicle's engine, ensuring efficient heat dissipation. It plays a crucial role in maintaining the optimal operating temperature of the engine, preventing overheating and potential damage. Proper functioning of the auxiliary water pump is essential for the overall health and performance of your cooling system. It works in conjunction with the main water pump and radiator to regulate engine temperature under various driving conditions. NRF is a reputable brand known for its quality cooling system components. This pump is built to meet or exceed OEM specifications, providing reliable performance and durability.