Genuine OEM Audi Exterior Mirror Mounting, part number 8T8857410D3FZ. This critical component serves as the base structure, securely attaching the entire exterior mirror assembly to the vehicle's door. It ensures the mirror remains stable and correctly positioned for optimal rearward visibility. The mounting is finished in Satin Black 3FZ and weighs approximately 1.408 kg. Using a genuine OEM mounting guarantees precise alignment, structural integrity, and compatibility with the mirror's electrical and mechanical connections.