Product review (5 stars): Replace it yourself and save some money!
After the thermostat in my Whirlpool refrigerator went out, I decided to purchase one online instead of dealing with the repair man.  Remarkably, the repair process for my model was pretty simple.  If you end up in my predicament, search the internet and find a video or instructions for your replacement and then buy it here.

This was a genuine part, exactly as advertised.  It was MUCH cheaper than the repair man quoted and most importantly I didn't have to pay his high service fee. It took me perhaps 15 minutes to replace the thermostat using simple tools and following the instructions I found online.