don't think, know
Click on the text in green on my previous post.
That will download the parts diagram for your deck
look for the bit you are talking about
If it does not have a number it is not a replaceable part
There are only 3 pieces of plastic on a 42" deere deck.
one is the cover
one is the discharge chute
the lst is the end of the pto cable and not replacable by itself.
None of them should move