The Genuine BMW Cover B-Column Upper Right (Anthrazit) - 51438056974 is a part of the BMW vehicle that covers the upper right side of the B-column, which is the vertical support between the front and back doors. The cover is made from high-quality materials and is designed to match the color of the interior, specifically in the color Anthrazit. This cover helps to protect the B-column and gives a sleek, finished look to the interior of the vehicle. It is an authentic BMW product and is designed to fit perfectly on the B-column of the specified model.