Genuine OEM Audi Activated Charcoal Container, part number 7M0201801B. This crucial component is part of the evaporative emissions (EVAP) system, designed to store fuel vapors from the fuel tank, preventing their release into the atmosphere. It is typically located within the vehicle's underbody or engine bay, connected to the fuel system via hoses. Weighing 1.026 kg, this container ensures compliance with emissions regulations. Genuine OEM charcoal containers provide the correct adsorption capacity and flow characteristics for effective vapor management and system integrity.