Product review (2 stars): Does not Last, Instructions Would Have Been Nice (Update 2018/7/4)
The item is exactly what it says, replacing the original part perfectly.  (My dishwasher is the Kenmore Elite model 12769; I cannot vouch for other models.)  Unfortunately, it does not come with instructions for how to remove the original part and install the new one.  Instructions would have been nice, as it is not completely obvious how to get it off.  The good news is that there are two of these installed on the top rack, so you can use the one you are not replacing as a model for how to put things back together.

To be fair, the assembly is not particularly complex.  I am fairly mechanically inclined, and I was able to figure it out and complete the replacement within about 15 minutes without resorting to searching for on-line help.  That being said, there were a couple of steps that were not completely obvious, including a couple that required a screwdriver.  If you are not mechanically inclined, you should definitely try to find an on-line video before venturing to fix it yourself.

Update November 2017:  I am taking away a star because it took only about two and a half years for this item to break again.  On the one hand, this item is exactly what it says it is per my original comments above.  On the other hand, this OEM part is clearly underengineered for the conditions it faces inside a dishwasher.  Five stars for being OEM.  One star for being junk.  I think 3 stars is fair.

Update 2018/7/4 -- I am taking away another star.  The OEM part has failed four times for me now.  The shortest lasting pair lasted just six months.  I have given up on the OEM part and am trying this non-OEM item:&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/ERW10712394-For-W10712394-Whirlpool-Dishwasher-Rack-Adjuster-Kit/dp/B01DDWK6VE/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">ERW10712394 For W10712394 Whirlpool Dishwasher Rack Adjuster Kit</a>.  I do not know how long the non-OEM part will last, but it definitely seems better built than the original.  In the mean time, I can at least confirm that the linked non-OEM part correctly fits my Kenmore Elite model 12769 dishwasher as well as the original part.