Genuine OEM Audi Activated Charcoal Breather Line, part number 5N0201931E. This line is crucial for the vehicle's evaporative emissions system, safely routing fuel vapors from the fuel tank to the activated charcoal canister for storage and eventual combustion. It connects the charcoal canister to the fuel system. Weighing approximately 0.023 kg and measuring 0.345 m in length, this pipe is designed for precise routing. Choosing a genuine OEM part ensures correct material composition and exact routing geometry, preventing leaks and maintaining emissions compliance.