Overload Piece

Would anyone happen to know what this piece is called/user for? I'm putting my OL leafs back in and saw it was missing from one of the leafs. Looking to get a replacement if it's necessary.

 

Looks like the overload spring spacer/seat. Overload springs don’t have the usual U brace to keep them inline, so sometimes you see a spacer like that on the bottom of the leaf pack to keep them in alignment.

See in this pic

 

That would make sense. Thank you. Would the dealership carry these or are there other aftermarket ones I can buy?