That's the first one of those I have ever seen which was broken. GM calls it a Clutch Release Bearing Support and it is in Group 0.821. Pontiac and Olds also used a very similar part, but I don't know if any of theirs will work in a Buick.
Here is the Pontiac part, if you are brave enough to try it.
http://www.ebay.com/itm/46-47-48-49-...-/261277727601
Hopefully, someone here with a Buick parts manual will see this thread and tell you the correct part number. Then you can do a Google search. When I tried just the group number, I got zilch.
Ray
Bookmarks