Genuine OEM Audi Fuel Tank Cap, part number 1K0201550F. This essential component seals the fuel tank opening, preventing fuel evaporation, contamination, and maintaining proper fuel system pressure. It is typically located on the exterior side of the vehicle, covering the fuel filler neck. Constructed from durable plastic, this cap weighs 0.105 kg. Choosing a genuine OEM fuel tank cap ensures a precise seal, proper venting, and compatibility with the vehicle's fuel system for optimal performance and safety.