Product review (4 stars): Perfect fit, exactly the same part.
The exact part that I needed. I only rated it at 4 stars because there were no instructions and I feel that the design is bad and feel that the wheel will break again at that stress point. I'm not sure how much testing the engineers did or how they did it, but it looks like a poor design. I've read that a lot of people have had to replace these within the first year.

Regarding replacement, just be patient and look for all of the release points and you should be able to figure it out.