The Genuine BMW Finisher Window Frame B-Pillar Fr Door (Gloss Black) - 51337005042 is a high-quality replacement part for BMW vehicles. It is designed to fit on the front door B-pillar and provides a sleek and stylish finish to the window frame. The finisher is made from durable materials and has a glossy black finish that matches the original design of the vehicle. It is an authentic BMW product and is specifically designed for a perfect fit. This finisher is a great option for those looking to replace a damaged or worn out window frame finisher on their BMW.