This product is a genuine BMW sound insulation designed specifically for the upper partition of the trunk. It is part number 51488212531 and does not contain any newline characters. This sound insulation is made to reduce noise and vibrations in the upper part of the trunk, providing a quieter and more comfortable driving experience. It is a high-quality product that is compatible with BMW vehicles and is designed to fit perfectly in the designated area. This sound insulation is an essential component for ensuring a smooth and quiet ride in your BMW.