Hi @peacefulman
If your mixer's model number begins with KSM6573----, type the full model number in the ''Search model # or part # search box'' of this [https://www.partselect.com/|link] and then click on the model number link that appears.
On the parts page that opens you will hopefully find a lot of the parts you need. Locate the parts you want and you'll find the ''manufacturer's part number'' as well as the linked parts suppliers part number for the part, listed with the part.
Search online for the ''manufacturer's part number'' of the parts you want, to find other suppliers that may suit you better.