This product is a genuine BMW trim piece for the front left window frame of a car door. It is designed to be glossy black in color and has a part number of 51337377883. This trim piece is made by BMW and is a high-quality replacement for damaged or worn out trim. It is specifically designed for the front left door and will help to give the car a sleek and polished appearance. This trim piece is an original BMW product and is made to the highest standards of quality and durability.