This product is a genuine BMW cover for the window frame of the rear right door. It is designed to fit the specific dimensions and style of BMW vehicles. The cover is made of high-quality materials and is an exact replacement for the original part. It is durable and provides a sleek and seamless look for the window frame. This cover is an essential component for maintaining the overall appearance and functionality of the door. It is part number 51337177664 and is an authentic BMW product.