Genuine OEM Audi Secondary Air Pump Connecting Pipe, part number 06E131143AK. This corrugated hose assembly plays a vital role in the vehicle's emissions control system by connecting the secondary air pump to the exhaust system. It ensures the proper delivery of air for catalytic converter operation. Weighing approximately 0.12 kg and measuring 0.52 m in length, its specific routing and material composition are engineered to withstand exhaust temperatures and vibrations, ensuring reliable emissions performance and preventing leaks.