Product review (5 stars): Amazon Prime saves the day again!
The rollers on the top rack of our dishwasher gave out and the online crowd said this is the kit to buy.  Even though we were doing a replacement for a Kitchenaid dishwasher instead of a Whirlpool, the parts fit just fine.  It took the hubby a grand total of 20 minutes to install, and we're back in business with clean dishes.  Thanks!