The Genuine BMW Outer Weatherstrip Rear Left Door (Black) - 51227133927 is a high-quality replacement part for the rear left door of BMW vehicles. This weatherstrip is designed to provide a tight seal between the door and the body of the car, protecting the interior from water, wind, and noise. It is made from durable materials and is an exact fit for the specified BMW model. This weatherstrip is black in color and is an authentic BMW product. It is designed to withstand the elements and provide long-lasting protection for your vehicle.