The Genuine BMW Radio Antenna Mast - 65206917928 is a replacement part for a BMW vehicle's radio antenna. It is a genuine BMW product, meaning it is made by the original manufacturer and is designed specifically for use in BMW vehicles. The antenna mast is responsible for receiving radio signals, allowing the radio to function properly. This particular antenna mast has the part number 65206917928. It is a high-quality and reliable replacement part for a damaged or malfunctioning antenna mast in a BMW vehicle.