Genuine OEM Volkswagen Heater Air Duct, part number 7P1820057. This component is an integral part of the heating and air conditioning system, responsible for directing conditioned air within the HVAC assembly. It weighs 0.11 kg and measures 0.24 meters in length. Using a genuine OEM air duct ensures precise fitment and proper air distribution, which is critical for efficient climate control and preventing air leaks within the system.