Product review (4 stars): Exact replacement for the old one on my Kenmore dishwasher
This appears to be an exact replacement for the original mount on my Kenmore dishwasher, but it will not fit nor work with the replacement upper spray arm rack mount (8539324).  The good thing is that you don't really need this part with the replacement upper spray arm rack mount.  The replacement upper spray arm mount fits a little differently and more securely than the original, so this turned out to be a throw away part.