Genuine OEM Audi Side Mirror Housing, part number 8Y1857409A9B9. This component serves as the main structural base for the exterior side mirror assembly, providing the essential mounting point for the mirror glass, motor, and outer cover. It is specifically designed for the front left side of the vehicle. Weighing 1.32 kg, this housing is finished in Satin Black (9B9). Genuine OEM mirror housings ensure correct alignment, electrical connections, and structural integrity, crucial for proper mirror function and safety.