Product review (4 stars): So far, so good.
Took me way too long to get around to actually replacing this part than it should have, particularly seeing as how it took me very little time to get it replaced once I set to work.  So far, I have only run the dishwasher a few times, but given my propensity for exploding water everywhere while working on plumbing, the fact that my kitchen remains dry speaks for itself.

The one problem I had is that the screw that fastens the part into place doesn't quite fit.  It's not a huge issue seeing as how the part can still be easily secured without it, but it does make it less than perfect.

Note:  My dishwasher is actually a Kenmore dishwasher that uses the same parts as Whirlpool.