The Genuine BMW Finisher B-Pillar Outer Left - 51377453309 is a high-quality exterior trim piece designed for BMW vehicles. It is specifically designed for the left side of the B-pillar, which is the vertical support between the front and rear doors on a car. This finisher is made from durable materials to withstand weather and road conditions, and it is an exact fit for BMW models. It adds a sleek and finished look to the B-pillar area, enhancing the overall appearance of the vehicle. This finisher is a genuine BMW product, ensuring the highest level of quality and compatibility with your car.