Genuine OEM Audi Activated Charcoal Container, part number 5N0201801. This critical component is part of the vehicle's evaporative emissions control (EVAP) system. Its function is to absorb and store fuel vapors from the fuel tank, preventing their release into the atmosphere until they can be safely purged and burned in the engine. Weighing 1.117 kg, this container plays a vital role in environmental compliance. Using a genuine OEM activated charcoal container ensures proper vapor adsorption capacity and system integration, which is crucial for maintaining emissions standards and preventing check engine lights.