The Genuine BMW Sound Insulation for Upper Partition Trunk - 51487074239 is a specialized sound insulation product designed specifically for BMW vehicles. It is used to reduce noise and vibrations in the upper portion of the trunk, providing a quieter and more comfortable driving experience. This product is made from high-quality materials and is designed to fit perfectly in the designated area of the trunk. It is a genuine BMW product, ensuring the highest level of quality and compatibility with your vehicle. With this sound insulation, you can enjoy a more peaceful and enjoyable ride in your BMW.