This product is a genuine Volkswagen/Audi drive motor inverter radiator hose with the part number 5QE122051D. It is designed specifically for use in Volkswagen and Audi vehicles and is used to connect the drive motor inverter to the radiator. This hose is made from high-quality materials and is a direct replacement for the original part. It is an essential component for the proper functioning of the vehicle's cooling system and ensures efficient cooling of the drive motor inverter.