Genuine OEM Audi Left Exterior Mirror Mounting, part number 4F2857409AJ01C. This component serves as the foundational bracket that securely attaches the entire exterior mirror assembly to the vehicle door. Positioned on the left side, it ensures the mirror remains stable and correctly aligned for optimal visibility. Weighing approximately 0.977 kg, this mounting is manufactured to precise factory specifications, guaranteeing exact fitment, structural integrity, and long-term reliability for the mirror assembly.