Product review (5 stars): Works great, cheap and easy.
Used as a replacement for a Whirlpool/Kirkland side by side refrigerator from Costco about 10 yr old.

Installation was a snap - loosen top 2 screws that hold the unit to the inside of the freezer.
Remove the third screw on the bottom of the unit. Slide up and off the top 2 screws, unplug the wires going into the icemaker. On my unit I had to remove the "U" shaped area for the water inlet pipe to go.
Plug in the same wires to the new unit, hang on 2 top screws. Level unit with a small level.
Tighten screws and you are done. Does take about an hour for the first load of ice.
I did use the bent wire part from the old unit.