I was able to order both gears. When I received them, I noticed that they were of different diameters. Specifically, the B8A-17322-B measured .841 in diameter (outside of teeth) and the C3DZ-17271-B measured at .770 in diameter.
I measured the gear that I am replacing and it measured .860. So, I installed the B8A-17322-B gear as it was closer to the original size.