This product is a genuine BMW inner weatherstrip for the rear right door. It has a part number of 51357179404 and is designed to provide a tight seal between the door and the vehicle body, helping to keep out water, wind, and other elements. This weatherstrip is specifically designed for use on BMW vehicles and is made from high-quality materials to ensure durability and a perfect fit. It is an essential component for maintaining the integrity of the door and ensuring a comfortable and quiet ride.