2003 - 2004 Lincoln Aviator Radio. AM FM 6 Disc CD Player OEM Radio Upgraded with Bluetooth Music Capability. Stream audio from a smartphone, tablet or Bluetooth capable music device! -- Bolt-In Style Mounts ---- Sound Mark Sound System -- Part Number: 5C5T-18C815-AC. Compatible Part Number: 4C5T-18C815-AA, 4C5T-18C815-AB, 4C5T-18C815-AC & 4C5T-18C815-AD. This is for a 2003-2004 Lincoln Aviator BOLT IN Radio for the Sound Mark Sound System. It features AM FM 6 disc CD player that has been upgraded with Bluetooth music. This radio also uses bolt in mounts instead of the spring clip mounts, so please be sure that you have the correct mounts in your vehicle. The part number for this radio is 5C5T-18C815-AC. Appearance is great as pictured, function is perfect! No codes required, it will plug and play! ** If you do not have the bolt in mounts or the Sound Mark Sound System, this radio will not work for you. ** The Bluetooth upgrade is simple to operate! Just pair the device, press the Bluetooth button and play your music or most in-app audio, including iTunes, Rhapsody, Pandora, Spotify, YouTube, Netflix and many, many more will be playing full, crisp, clean quality while taking advantage of all sound controls on the radio. To complete paring, some devices require a pass key or code which is "0000." When you do not want to listen to Bluetooth music, simply unpair or turn off your device's Bluetooth. ** Please note that this will not work with phone calls as phone manufacturers have designed calls to work with Bluetooth mic systems only. ** If you have any questions about the operation of the Bluetooth, please feel free to call! This radio has been cleaned, upgraded, serviced as needed and thoroughly checked.