Product review (5 stars): Pricey but cheaper than Kitchenaid.
I purchased this rinse aid cap from Amazon after the original dislodged from my Kitchenaid Dishwasher(Model#KUDP02CRBL3) and settled on the bottom of the tub whereby it was melted by the heating element. I called Kichenaid and they offered to sell me a replacement for $29.00 plus shipping. This was more than enough motivation for me to shop around.  For $10.89 and no shipping (Free Super Saving elgible), I purchased this one from Amazon and it fits perfectly. Subsequently, Kitchenaid called back to respond to the dissatified customer response that I had lodged and offered to lower the price by half plus shipping.  Too little, too late Kitchenaid.  This part apparently fits Kitchenaid, Whirlpool, and some Kenmore dishwashers. My research also revealed that this appears to be a common issue with these dishwashers and Kitchenaid is incurring customer disatisfication with their price gouging on this part. Thanks Amazon.