The Genuine BMW Inner Weatherstrip Rear Left Door - 51357289261 is a high-quality, OEM replacement part for BMW vehicles. It is specifically designed for the rear left door and serves as a weatherstrip to seal the door and prevent water, dirt, and noise from entering the vehicle. This weatherstrip is made from durable materials to withstand harsh weather conditions and provide a tight seal. It is an essential component for maintaining the integrity and comfort of your BMW's interior. This product is an authentic BMW part and is guaranteed to fit and function properly.