Genuine OEM Volkswagen Activated Carbon Canister, part number 3Q0201801D. This canister is a key part of the vehicle's evaporative emission control (EVAP) system. It captures and stores fuel vapors that evaporate from the fuel tank, preventing them from being released into the atmosphere. The activated carbon inside adsorbs these vapors, which are later purged into the engine to be burned. Manufactured with high-quality adsorbent material and durable housing to ensure effective emission control and longevity. Genuine OEM canisters are precisely calibrated to meet strict emissions standards and integrate seamlessly with the vehicle's EVAP system.