The Genuine BMW Heated Door Mirror Glass Left (part number 51168250436) is a replacement mirror glass for the left side of a BMW vehicle. It is designed to fit and function just like the original mirror glass, providing a clear view for the driver while also having the added feature of being heated. This allows for improved visibility in cold weather conditions, as the mirror glass will not fog up or freeze over. This product is an authentic BMW part and is made with high-quality materials to ensure durability and longevity. It is a direct replacement for the original mirror glass and can be easily installed without any modifications.