Genuine OEM Audi Door Mirror Glass, part number 5M0857521C. This essential component provides a clear reflective surface for the left-side exterior door mirror, crucial for driver visibility and safety. It is positioned on the front, left side of the vehicle. Weighing 0.139 kg and measuring 0.17 m in length, this mirror glass is manufactured to precise optical standards. Using genuine OEM mirror glass ensures correct curvature, anti-glare properties, and heating element compatibility (if applicable), which are vital for optimal visibility and integration with the vehicle's mirror assembly.