Product review (5 stars): Works just fine
I wondered if this would be easy to use since I didn't see the white cap on it that is showing on the refrigerator.  All you do is remove the old part, twist off the white cap and put it on the new part.  Just put it back into the refrigerator and it works just fine! (remove the two red caps from the bottom of the new part first!)  So easy and saved $$$$