Found this in my trans sump…

C4 auto trans. Anyone know if this is part of it or some random piece someone else dropped in the pan unrelated ?

 

must be first fluid change?

 

Just bought it & dropped all fluids so no idea yet. Not familiar with automatics.
My friend checked the schematics for me & said it is not part of the tranny.

 

Plug that keeps debris out of transmission till the dip tube is installed.

I've never seen one with that long of stem, all I've seen had stems of maybe 1½". Those were pushed into pan when dip tube was installed.

 

It's a plug, as described, from factory assembly. No issues....just leave it out.