The Genuine BMW Outer Weatherstrip Left (Gloss Black) - 51228022207 is a replacement part for BMW vehicles. It is a weatherstrip that is installed on the left side of the vehicle, specifically on the outer edge of the door. The weatherstrip is designed to seal the door and prevent water, dust, and other elements from entering the vehicle. It is made from high-quality materials and has a glossy black finish to match the overall aesthetic of the vehicle. This weatherstrip is an authentic BMW product and is specifically designed for a precise fit and function.