The Genuine BMW Outer Weatherstrip Left (Gloss Black) - 51327890453 is a high-quality weatherstripping component designed specifically for BMW vehicles. It is made from durable materials and features a glossy black finish for a sleek and stylish look. This weatherstrip is located on the outer edge of the vehicle's door and helps to seal out moisture, dust, and noise from the outside environment. It is an essential part of the vehicle's weatherproofing system and helps to maintain a comfortable and quiet interior. This weatherstrip is an authentic BMW product and is designed to fit perfectly on the left side of the vehicle.