This NRF auxiliary water pump (part code 390055) is designed to supplement the main engine cooling system. It plays a crucial role in circulating coolant, particularly when the engine is at low speeds or idle, ensuring consistent temperature management. Proper functioning of the auxiliary pump is vital for preventing overheating and maintaining the efficiency of your vehicle's climate control system. It helps to distribute heat evenly throughout the engine block and radiator, contributing to overall engine health and longevity. NRF is a reputable brand known for its quality cooling system components. This pump is engineered to meet or exceed original equipment specifications, providing a reliable solution for your vehicle's cooling needs.