Genuine OEM Volkswagen Rear Antenna Amplifier, part number 3C9035552. This electronic module is designed to boost the signal received by the antenna, ensuring clear and consistent radio reception for AM/FM bands. It is typically located at the rear, often on the right side of the vehicle. Weighing 0.051 kg, this compact unit is crucial for optimal audio system performance. Choosing a genuine OEM amplifier ensures correct signal processing and compatibility with the vehicle's electrical system, preventing interference and maintaining factory-specified audio quality.