This NRF auxiliary water pump (part code 390065) is designed to circulate coolant within your vehicle's engine. It plays a crucial role in maintaining the optimal operating temperature, preventing overheating and ensuring the longevity of your engine. Proper functioning of the auxiliary water pump is essential for the efficiency of your car's cooling system. It works in conjunction with the main water pump to manage coolant flow, especially during periods of low engine speed or when the heater is in use. NRF is a recognized brand in the automotive aftermarket, known for producing reliable cooling system components. This pump is built to meet or exceed original equipment specifications, offering a dependable solution for your vehicle's needs.