Product review (5 stars): Better than new and easy to install.  Worth every penny.
This kit works great. The new metal design fixes a design flaw that the original design had (being made from a cheap plastic that eventually becomes brittle and breaks).  Our dishwasher is only a few years old and was one of the higher end Kitchenaid models so we were disappointed to learn of this "lack of engineering" the first time the plastic clips for the wheels broke.  I replaced them with the original parts twice before finally giving up and using a marine epoxy to reconnect the wheels.  That actually lasted longer than the factory parts did but eventually it gave out too.  This time I discovered the new improved replacement part and after a quick swap everything works great again.  I can tell the design is way ahead of the old design so I am hoping this is the permanant fix.  Just make sure you reference the exact kit for your dishwasher model.  There are some that look the same but have subtle differences...