Genuine OEM Audi Mirror Glass, part number 4M8857535H. This component serves as the primary reflective surface within the exterior side mirror assembly, providing the driver with a clear and accurate view of the surroundings for safe maneuvering and lane changes. It measures approximately 0.183 meters in length, 0.137 meters in width, and weighs 0.257 kg. Choosing genuine OEM mirror glass ensures precise fitment into the mirror housing, correct optical clarity, and proper integration with any heating or auto-dimming features, maintaining factory safety and visibility standards.