The Genuine BMW Seal Outer Left Mirror Triangle is a rubber seal that is designed to fit on the outer edge of the left side mirror triangle on BMW vehicles. This seal helps to prevent water, dirt, and debris from entering the space between the mirror and the vehicle, ensuring a secure fit and preventing damage to the mirror. It is an authentic BMW product, part number 51337033637, and is made to the highest quality standards for optimal performance and durability. This seal is specifically designed for the left side mirror triangle and should only be used as a replacement for damaged or worn seals on BMW vehicles.