Product review (4 stars): Not that hard to install
This did not come with directions. I found a YouTube video on how to install a Whirlpool ice maker that was very similar. You'll need a Phillips screwdriver to remove the freezer drawer and remove/ loosen the old screws. (The top screws just have to be loosened.)

My only issue was that, with my fridge, the metal bar it uses to detect if there's enough ice to stop has a slightly different shape than the original. That's an easy fix: just replace it with the old bar. So, be sure to check once you've pulled the old one out and before you put the new one in.

It took longer to clean out the freezer than it did to install.