Product review (5 stars): So much better than new.
Our Kitchenaid dishwasher is less than 2 years old, and with 3 adults in the household, not abused or overworked.  I was pretty dismayed at having to replace parts so soon.  After tracking down the numbers I decided to check Amazon and was pleased to find redesigned metal parts to replace the flimsy plastic originals for only $2.00 more (actually less expensive with free Prime shipping).  Maybe the next step is to " redesign" the instructions that come with them.  The photographs and descriptions are not very clear, and there is no help getting the old parts off.  On the other hand, with a little trial and error everything fits together nice and snug.