Genuine OEM Audi Rear Muffler Vacuum Hose, part number 420131385AH. This hose is an integral part of the exhaust system, responsible for connecting various components, often related to exhaust flap control or emissions. It is positioned at the rear of the vehicle. Weighing only 0.063 kg, this lightweight hose is designed for specific routing and connection points. Opting for a genuine OEM hose ensures correct material composition, precise length, and proper sealing to maintain optimal exhaust system function and vacuum integrity.