Genuine OEM Audi Activated Charcoal Container, part number 1S0201801. This crucial component is part of the vehicle's evaporative emissions control (EVAP) system, designed to capture and store fuel vapors that would otherwise escape from the fuel tank into the atmosphere. It is typically mounted near the fuel tank and connected by hoses to manage vapor flow. Weighing approximately 0.624 kg, this container is filled with activated charcoal to absorb hydrocarbon vapors. Using a genuine OEM charcoal container ensures the correct absorption capacity, proper system integration, and compliance with emissions regulations, contributing to environmental protection and optimal engine performance.