Mile Marker 42

I got a parts breakdown for my Dometic AC unit that showed the motor part number. I did an internet search and actually found an open box special at Adventure RV and it had the replacement rubber idolators.
If you have a Dometic AC unit you can find your parts list here https://www.edometic.com/allusr/sp.nsf/spcac?ReadForm , if you have the model number use it to search or you'll have to find the correct model.

From there just do a search using the part number.