Genuine OEM Audi Left Side Mirror Housing, part number 8Y1857409K9B9. This component serves as the main structural body and mounting point for the exterior side mirror assembly. It is positioned on the front left side of the vehicle, providing the base for the mirror glass, motor, and cover. Weighing 1.389 kg and finished in Satin Black (9B9), this housing is crucial for the mirror's integrity. Choosing genuine OEM ensures exact dimensions, correct mounting points, and proper alignment for optimal visibility and integration with the vehicle's electrical system.