The Genuine Audi Radiator Coolant Hose - 8K0121055N is a high-quality replacement part for Audi vehicles. This hose is designed to transport coolant from the radiator to the engine, ensuring proper engine temperature and performance. It is made from durable materials to withstand high temperatures and pressure, and is an exact fit for the specified Audi model. This radiator coolant hose is an essential component for the proper functioning of the vehicle's cooling system and should be replaced if there are any signs of wear or damage.