Product review (4 stars): KEEP YOUR OLD ICEMAKER - YOU WILL NEED PARTS FROM IT.
It took a solid week just to go from ordering, to them shipping this, so arrival took over 10 days.  When it was received, it did not include mounting parts such as the plastic tray that is supposed to be bolted underneath and is what slides the unit into the freezer, or the screws.  So KEEP YOUR FAULTY UNIT AND ALL HARDWARE until you receive this replacement ice maker, as you will have to salvage parts from it.  The description should declare this fact more clearly.
Anyway, got it in, works okay.  And it DID arrive in a genuine Whirlpool box., but did not include any directions.