Hi flogfrog,
We do not support the eBay Motors "Parts Compatibility" feature quite yet, but we are currently working on incorporating support for this feature into our site and will get it added as soon as possible. At this point, it looks like we’ll most likely be able to support this feature within the next month or so.
I hope this helps. If you have any other questions about your account, please feel free to contact our customer support team using the “File a Support Case” link on our “Help” page.
-Mike