Genuine OEM Volkswagen Water Box Sound Absorber, part number 1T0863993G. This specialized insulation panel is designed to mitigate noise and vibrations emanating from the water box or plenum chamber area, typically located at the base of the windshield. Its primary function is to enhance cabin comfort by reducing unwanted sounds from water drainage, wiper mechanisms, or air intake. Constructed from a dense, fibrous sound-absorbing material, weighing 1.67 kg. Using a genuine OEM sound absorber ensures precise fitment and effective noise reduction, contributing to a quieter and more refined driving experience.