The Cessna 120-140 Association Forum

Putting my firewall back together. Didn’t take it apart was like this when I got it. I’m in the process of putting the heater / cold air assy back on the firewall. And I have a bag with some parts in it. Not sure what this is. I know it’s broken. But still would like to know what it is. Can’t find it in the IPC.

I did a cursory look at part# 0450247 images online and can't figure out where something like that would go. Same as early Cessna 150's.