Genuine OEM Volkswagen Left Rear Antenna Amplifier, part number 5NA035577A. This electronic module is strategically located on the left side of the rear window, integrated with the vehicle's antenna system. Its primary function is to amplify weak radio and communication signals received by the antenna, ensuring clearer reception for radio, navigation, and other connected services. Weighing 0.056 kg and measuring 0.115m in length, this amplifier is designed for precise electrical compatibility. Using a genuine OEM amplifier guarantees correct signal processing, optimal reception quality, and seamless integration with the vehicle's infotainment system.