1989 Buick Riviera & Reatta Radio Receiver Box -- Bose Version -- Part Number: 16087110. This is for a Buick Riviera & Reatta 1989 factory OEM radio receiver box! This receiver box is for the Bose sound system and if you do not have the Bose sound system, this will not work in your vehicle. The part number for this radio receiver box is 16057156. This radio is being sold as a REPLACEMENT ONLY! If you do not have this exact part number currently in your vehicle, it will likely NOT WORK. If you are unsure of your part number, give a Buick dealer a call with your VIN and they should be able to provide you with the correct part number. They may look the same and have the same plugs but data streams may be different, not allowing them to code. For example, external amps are used in some cars and will not allow interchange, etc. This radio has been cleaned, serviced as needed, and thoroughly checked.