Genuine OEM Audi Charcoal Container Line, part number 4G0201991AJ. This line is integral to the evaporative emission control system, responsible for transporting fuel vapors to or from the charcoal container. It ensures that harmful fuel emissions are properly managed and prevented from escaping into the atmosphere. It connects to the fuel tank assembly and the charcoal canister. Weighing approximately 0.059 kg and measuring 0.56 m in length, this line is constructed from durable, fuel-resistant material. Using a genuine OEM line ensures precise fitment, leak-free operation, and compliance with emission standards, critical for both environmental protection and vehicle performance.