Genuine OEM Volkswagen Air Conditioner Expansion Valve, part number 2Q0816679D. This crucial component in the HVAC system precisely regulates the flow of refrigerant into the evaporator, controlling the cooling process and maintaining cabin temperature. It is located within the main HVAC housing. Weighing 0.156 kg and measuring 0.085m x 0.04m x 0.04m, this valve ensures efficient and consistent performance. Choosing a genuine OEM expansion valve guarantees correct calibration, material compatibility with refrigerants, and reliable operation for effective climate control.