Genuine OEM Audi Air Duct, part number 4L0820857. This precisely molded plastic duct is a component of the vehicle's heating, ventilation, and air conditioning (HVAC) system, specifically located on the left side to channel conditioned air into the cabin. Weighing 0.073 kg, it ensures efficient airflow distribution and optimal climate control. Genuine OEM air ducts guarantee exact routing, secure connections, and durable material to prevent leaks and maintain system efficiency.