[Twomato]

I replaced the entire unit on mine (for consistency) and bought an Ultimate cup holder to hold my coffee. The bezel comes off which reveals the cup holder slide mount screws. Use a plastic trim tool to lift - there are four bezel pegs - one at each corner. Go slow, and watch your screws from falling in to the console.

See Pelican parts for the entire replacement unit which is cheaper than replacing just one side. There's also usually a forum member selling one of these units from which you could raid the pieces you need.