Genuine OEM Audi Air Pump Connecting Pipe, part number 4L0131206D. This hose is a critical component in the emissions system, connecting the secondary air injection pump to the exhaust system. It facilitates the delivery of fresh air to aid in the combustion of unburnt fuel in the exhaust gases. The pipe has a length of approximately 0.62 meters. Using a genuine OEM connecting pipe ensures proper fitment, resistance to exhaust temperatures, and maintains the integrity of the emissions control system.