Genuine OEM Volkswagen Air Conditioner Expansion Valve, part number 7E0816679. This valve precisely regulates the flow of refrigerant into the evaporator, a critical function for the efficient operation of the vehicle's air conditioning system. It is positioned within the HVAC assembly, connected to the evaporator. Weighing 0.19 kg and measuring 0.08m x 0.036m x 0.04m, this genuine OEM component ensures exact calibration and reliable performance, vital for maintaining consistent cabin temperature and AC system longevity.