Phoenix, AZ for me so absolutely no snow blower here ! But pulley looks similar to those used on lawn tractors. Can you not pull up owner's manual and find part number, and search that on Google or Ebay? Try https://download.sears.com/own/spin_prod_674132601.pdf
I know Craftsman stuff seems to have a zillion updated part numbers.
Or call an online lawn tractor parts store and let them search for you.
Funny thing, here in Tx a newbie had a nice pretty new 2 stage snowblower in their driveway as they unloaded the moving truck. This was a few years ago. I wonder if they still have it...