Product review (5 stars): Whirlpool - Are You Listening?
Hooray for Amazon for making this part available and about half the price offered by other online retailers. Boo to Whirlpool for not addressing this fundamentally weak part. About three months after the left one snapped on our 3 month old dishwasher, the right one broke in precisely the same way - the plastic hub on which the forward-most wheel revolves simply broke. The first one could have been an anomaly, but two breaks in the same spot on these mirror-image parts - and the fact that other posters here report a similar break - means this is just a straight-up design flaw. Whirlpool, BEEF UP THIS PART!