Product review (4 stars): The good: it fit my daughter in law's Kenmore dishwasher ...
The good:  it fit my daughter in law's Kenmore dishwasher perfectly.  Fortunately there's a video online showing (sort of) how to install it.  My first time, it took about 20 minutes, including reviewing the video.  The bad:  it has the same design flaw as the 2-year-old broken original:  plastic mounting-axles for the roller wheels.  So I suppose it won't last much longer than the original did.  The years of 25-year dishwashers are gone, I'm afraid.