This NRF auxiliary water pump, part code 390072, is designed to circulate coolant within your vehicle's engine. It plays a crucial role in maintaining the optimal operating temperature, especially during periods of low engine speed or when the main water pump may not provide sufficient flow. Proper functioning of the auxiliary pump is essential for preventing overheating and ensuring the longevity of your engine's cooling system. It works in conjunction with the main cooling system to manage heat effectively. NRF is a reputable brand known for its quality cooling system components. This pump is manufactured to meet stringent standards, providing reliable performance and durability for your vehicle.