The Genuine BMW Cover Column B Left (AlaskaGrey) is a replacement part for a BMW vehicle. It is designed to cover the left side of the B column, which is the vertical support between the front and back doors of the car. The cover is made from high-quality materials and has a sleek AlaskaGrey color. It is an authentic BMW product and is specifically designed for a precise fit on the left side of the B column. This cover is an essential component for maintaining the appearance and functionality of a BMW vehicle.