Genuine OEM Audi Antenna Amplifier, part number 4K5035225Q. This electrical component is designed to boost the signal received by the vehicle's antenna, ensuring optimal reception for radio, navigation, or other communication systems. It is typically mounted on the vehicle's roof structure. Weighing 0.066 kg and measuring 0.114 m in length, this amplifier ensures precise signal processing and integration with the vehicle's electrical architecture.