Genuine OEM Volkswagen Refrigerant Line, part number 4M0816743BC. This line is essential for transporting refrigerant between the various components of the vehicle's air conditioning system. It is located at position 15 in the AC system diagram. The line measures 0.41 meters in length. Genuine OEM refrigerant lines are constructed with specific materials and tolerances to withstand high pressures and prevent leaks, ensuring efficient and reliable AC performance.