Genuine OEM Volkswagen Wing Mirror Glass, part number 5K0857521C. This part provides a critical reflective surface for the vehicle's exterior mirror assembly, ensuring clear rearward visibility. It is designed for the left side of the vehicle. Weighing 0.169 kg and measuring 0.17m x 0.115m x 0.041m, this genuine OEM mirror glass ensures precise fitment and optical clarity, crucial for safety and compliance with road regulations.