Product review (5 stars): GE UK-KIT-4N Replacement
This ice maker replaces the OEM perfectly.  It took me less than 5 minutes to replace the original.  The wiring harness that came with the kit was not for the UK-Kit (it is designed for the IM series).  However, you can reuse the wiring harness from the old unit.  After loosening two upper screws and removing the lower bracket, the unit slips in perfectly.  Reattach the lower bracket, connect the cable, remount the unit and you are done!

I would suggest filling the tray with water to hasten the freeze cycle along.  Otherwise you have to wait a day for the ice maker to cycle by itself.  It's been a week and the ice bin is full.

My original ice maker was leaking water into the ice bin each time the ice tray was filled automatically.  After 10 years of operation, the original unit was decomposing.  The plastic liner was worn and the exposed soft metal was eaten away by corrosion and began a small leak.