Genuine OEM Audi A/C Refrigerant Pipe, part number 4M0816738N. This critical component is responsible for transporting refrigerant throughout the vehicle's air conditioning system, facilitating the heat exchange process necessary for cabin cooling. It is an integral part of the A/C circuit. Weighing approximately 0.658 kg, this pipe is designed for specific routing and connections. Choosing a genuine OEM refrigerant pipe ensures correct material composition, precise bending for proper routing, and leak-free connections, which are vital for the long-term efficiency and reliability of the air conditioning system.