Product review (5 stars): i did it by myself
I installed it myself and it works just great-no more water on the floor or ice in the bottom of the bottom freezer -Kitchen Aid frig.  It took a few hours but with the help of you tube videos, I replaced the old part, defrosted the drain line, and put it all back together.  It took some contortionist positions because the part is at floor level and I am a 70 year old woman.