The Genuine BMW Outer Weatherstrip Rear Left Door is a high-quality replacement part for the rear left door of a BMW vehicle. It is designed to provide a tight seal between the door and the body of the car, preventing water, dust, and other debris from entering the interior. This weatherstrip is made from durable materials and is an exact fit for the specified BMW model. It is an authentic BMW product, ensuring reliable performance and compatibility with other parts. This weatherstrip is part number 51357178013 and is suitable for use in various BMW models.