The Genuine BMW Roof Moulding Left - 51137250397 is a high-quality replacement part for BMW vehicles. It is designed to fit on the left side of the roof and is used to secure and protect the roof rails. This moulding is made of durable materials and is an exact match to the original part, ensuring a perfect fit and function. It is an authentic BMW product, ensuring reliability and longevity. This roof moulding is essential for maintaining the sleek and stylish appearance of your BMW while also providing added protection for the roof rails.