Genuine OEM Audi Transmission Ventilation Line, part number 02E301472E. This component is crucial for maintaining proper pressure and temperature within the transmission by allowing for air or fluid ventilation. It is installed as part of the transmission assembly. With a length of approximately 43 cm, this line ensures correct routing and connection. Using a genuine OEM ventilation line guarantees the correct material composition and precise dimensions, which are essential for the long-term health and performance of the transmission.