Genuine OEM Audi Charcoal Canister Lock Line, part number 4G0201997BD. This line is a crucial component of the vehicle's evaporative emissions system, designed to manage and route fuel vapors. It connects directly to the charcoal canister, facilitating the capture and storage of fuel vapors to prevent their release into the atmosphere. The line measures approximately 0.78 meters in length and weighs 0.151 kg. Using a genuine OEM line ensures precise fitment and material integrity, critical for maintaining the sealed integrity of the emissions system and preventing leaks.