I found that arm in my stuff, still not sure if it's to my current rig (console is in pieces) or not. Here are some pics that might help with your 3D printing. Lemme know if you need some measurements. I have a mechanical Vernier caliper.
Thank you so much! Appreciate your time in posting the images. Make sense now because i have one side with the cap and the other side doesn't have the plastic hub. It doesn't say Automatic on mine though. Would that mean my vehicle doesn't have that feature or they wore or came off somehow?