The Genuine BMW Roof Edge Moulding - 51131977681 is a high-quality, original equipment manufacturer (OEM) part designed specifically for BMW vehicles. It is a black, plastic trim piece that attaches to the edge of the roof and helps to protect the roof from damage, as well as providing a sleek and finished look. This moulding is durable and weather-resistant, ensuring long-lasting performance. It is an essential component for maintaining the overall appearance and functionality of your BMW.