Genuine OEM Audi Auxiliary Heating Hose, part number 8K0819334AM. This hose serves as a crucial connection within the vehicle's auxiliary heating system, facilitating the circulation of heated fluid to various components. It is a short, shaped hose, approximately 0.125 meters in length. Choosing a genuine OEM auxiliary heating hose ensures the precise fit, material integrity, and resistance to thermal stress required for reliable operation and to prevent leaks in the heating circuit.