This is a genuine BMW moulding folding top lid in a sleek aluminum matte finish. It has a part number of 51177182257 and is designed to fit BMW models. This product is used to cover and protect the folding top mechanism on convertible vehicles. It is a high-quality, durable product that is an exact match for the original part. This moulding folding top lid is an essential component for maintaining the functionality and aesthetics of your BMW convertible.