The Genuine BMW Finisher Window Frame B-Pillar Fl Door (Gloss Black) - 51337187201 is a replacement part for a BMW vehicle. It is designed to fit on the B-Pillar of the front door and has a glossy black finish. This finisher is an authentic BMW product and is made to the same high-quality standards as the original part. It is used to enhance the appearance of the B-Pillar and give it a sleek and stylish look. This finisher is durable and long-lasting, providing a perfect fit for your BMW vehicle. It is a genuine BMW product and is recommended for use in any BMW vehicle that requires this specific part.