An ACDelco GM Original Equipment Radio Antenna Mast receives the Over The Air (OTA) radio station signals for your vehicleâs radio receiver, and are GM-recommended replacements for your vehicleâs original components. Damaged or corroded antennas can impair radio station reception. These original equipment radio antenna masts have been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.Get the GM quality you know and trust with ACDelco GM Original Equipment Electronics. Stay with the parts brand your vehicle came with and get peace of mind that the fit, form, and function is up to the high standards and specifications of General Motors. ACDelco GM Original Equipment Electronics are engineered for virtually every make and model of GM car, light duty truck, and sport utility vehicle. From key fobs, tire pressure sensors and components, antennas and components, amplifiers, and cables, ACDelco has your vehicleâs electronic equipment needs covered.