The Genuine BMW Window Guide Left Front Door is a high-quality replacement part for BMW vehicles. It is designed to fit the left front door and is made from durable materials to ensure long-lasting performance. This window guide helps to guide the window as it moves up and down, ensuring smooth operation. It is an authentic BMW product, manufactured to the highest standards for a perfect fit and reliable function. This window guide is part number 51337414531 and is suitable for various BMW models.