This product is a Genuine BMW Outer Weatherstrip for the left side of the vehicle. It is designed with an Alu Satiniert finish, giving it a sleek and modern look. The weatherstrip is used to seal the gap between the door and the body of the car, providing protection against water, wind, and noise. It is made specifically for BMW vehicles and is manufactured with high-quality materials to ensure durability and a perfect fit. This outer weatherstrip is part number 51377275785.