The Genuine BMW Outer Weatherstrip Left (Gloss Black) - 51377894363 is a high-quality replacement part for the outer weatherstrip on the left side of a BMW vehicle. This weatherstrip is designed to provide a tight seal between the door and the body of the car, helping to keep out water, debris, and other elements. It is made from durable materials and features a sleek gloss black finish that matches the rest of the vehicle's exterior. This weatherstrip is an authentic BMW product and is specifically designed to fit and function perfectly on compatible BMW models.