Genuine OEM Volkswagen Transverse Wall Damper, part number 5C0863354A. This component is designed to reduce noise and vibration transmission into the vehicle's cabin, specifically for the left side in LHD configurations. It is typically installed on the firewall or bulkhead, acting as an acoustic and vibration insulator. Made from a shaped felt or foam material, it weighs 0.221 kg. Using a genuine OEM damper ensures the correct material density, precise shape for optimal coverage, and effective noise reduction, contributing to a quieter and more comfortable interior environment.