Genuine OEM Volkswagen Door Mirror Glass, part number 6Q0857521E. This mirror glass serves as the reflective surface for the exterior side mirror assembly. It is specifically designed for the left side, providing the driver with a clear view of the vehicle's surroundings. Weighing 0.145 kg, it is engineered for optical clarity and durability. Using genuine OEM mirror glass ensures proper fitment, optical quality, and often includes features like heating elements or wide-angle sections for optimal visibility and safety.