Genuine OEM Volkswagen Expansion Valve, part number 7L0820513G. This critical component is located within the air conditioning system, where it precisely regulates the flow of refrigerant into the evaporator. By controlling refrigerant expansion, it ensures efficient heat absorption and optimal cooling performance inside the cabin. Weighing approximately 73 grams, this valve is a compact yet vital part of the HVAC system. Using a genuine OEM expansion valve guarantees correct calibration and material integrity, preventing refrigerant leaks and ensuring the longevity and efficiency of the entire A/C system.