Toyota put the wrong part in the right bag, uuuuuugh. I knew something was up when I had struggled for a bit getting it to attach to the cluster. Finally mic-ed the ends of the old and new that meet at the cluster, inner diameter of ends, original 16.00mm, new part 19.00mm. Gee, no wonder the thing does not clip on properly. Now I'll have to pull out the new one and wait for another.
On the bright side, I'm getting pretty adept at installing these now. It should only take me 30 minutes to reinstall new/er one. Thanks Toyota for probably hiring a completely uneducated twit to handle parts at your national distribution center(ie labeled parts improperly).
regards