The 2100 Complete Auger Replacement Kit gives you all the parts you need to replace the whole auger assembly, plus it is lubed.  Includes the 2100 auger, nylon auger bushing and washer, and the auger motor.

P 2126 Nylon Auger Bushing/ 2100

Model 2100 Cherokee Auger

P-0200 Auger Motor