The Genuine BMW Cover B-Column Upper Left (Grey) is a replacement part for the B-column on the left side of a BMW vehicle. It is made of high-quality materials and is designed to match the original color and style of the vehicle. This cover is specifically designed for the upper portion of the B-column and is intended to protect and cover any exposed components in that area. It is an authentic BMW product and is compatible with various BMW models. This cover is grey in color and has the part number 51437225309. It is a durable and reliable option for maintaining the appearance and functionality of a BMW vehicle.