Genuine OEM Volkswagen Subwoofer Adapter, part number 5NA035643. This component is designed to provide a precise mounting interface for the audio system's subwoofer. It sits between the subwoofer and its mounting point, ensuring a secure and vibration-free installation. Weighing 0.019 kg and measuring 0.146m in diameter, this adapter is engineered to exact specifications. Using a genuine OEM adapter guarantees the correct fit, acoustic isolation, and long-term durability for your vehicle's sound system.