Product review (5 stars): Perfect Replacement Part
Although I have a Kenmore Elite dishwasher, it is made by Whirlpool.  The part is made of plastic and tends to snap the wheel hubs frequently.  Most places (including Sears and Whirlpool) want $25-30 plus S&H.  This is identical at a much better price.  I have yet to have a problem with the replacements.  Fingers are crossed.