For Sale is a Used McCulloch bearing support.  Chip out of the edge, this will not affect how it works, but it is damaged as shown.  Other than that it is nice.

It was on a chainsaw so has some dirt and related scratches. 

It may fit:

Mc 100 Series Kart

Chainsaws:

790, 795, 797, 125

It may fit other models, please ask if you are unsure.