Product review (5 stars): Completely a waste of design and for an otherwise nice product makes ...
We have the Kitchenaide W10502127A and have purchased 3 of the upper arm replacements (Aftermarket Replacement W10350376 Whirlpool Kitchen Aid Dishwasher Adjuster W/ Wheels W10253546) due to the entire assembly being cheap plastic.  The tabs inside the wheels become brittle after a few months and snap.  Completely a waste of design and for an otherwise nice product makes it very disappointing. **So that everyone understands**  DO NOT BUY THAT ASSEMBLY!!!! This is a perfect replacement and went together easily.  The only downside is the instructions are poorly printed and the pictures look like photo's of bigfoot.