The link below will take you to Amazon where you can buy the dash kit necessary to install an aftermarket radio in your Acura TSX from years 2004 to 2008. This kit comes with the dash kit and a wiring harness that needs to be modified to replace the factory radio and keep all of the factory speakers working and your steering wheel controls. You will get a new climate control console with a dedicated LCD screen to help you control your vehicles heat and a/c. This kit works on TSX with and without navigation.
This kit can accommodate a double din or single din radio. A short chassis radio or mechless receiver is encouraged so you don’t have to cut the factory trim behind the radio. The other option from this kit is to install a radio below the factory radio. You will also need to buy the AXSWC.