[jdl]

You might talk to the parts department at your local dealer, see if they can order something for you. Take the plastic piece off so you can show it to the parts people. In the past on different makes and models, I have swapped out the driver seat for the passenger seat. Yeah the seat was still broke,but, it wasn't on the driver side any longer. That may not be applicable for your vehicle? Maybe you can use the plastic piece from the passenger side? You probably want to fix it the right way, that means finding a part, somewhere. Maybe the seat base comes off the seat and you can replace the base?