Genuine OEM Audi Front Left Door Window Guide, part number 8K0837439J. This essential component is designed to guide the window glass smoothly and precisely as it moves up and down within the door frame. It is specifically positioned on the front left door, ensuring proper alignment and preventing rattling or binding of the window. Weighing 1.525 kg and measuring 1.38 meters in length, this guide is engineered for durability and exact fitment. Choosing a genuine OEM window guide ensures the correct dimensions and materials for quiet, reliable window operation and a perfect seal against the elements.