Product review (4 stars): Replaces the WR30X0327
UPDATE: I downgraded this to 4 stars based on a design flaw - we find the ice cubes pile up in the front of the bin and push the switch from On to Off. Then in a few days we are out of ice again. This happens every three weeks or so. I put a piece of duct tape over the switch to hold it in the On position but really, this should not be necessary.

Original review: (still valid) This is not identical to the WR30X0327 that was in our 15 year old GE side-by-side but it is a plug-compatible direct substitute for it. Took me all of three ,minutes to install it - remove one and loosen two screws holding the old one in place, unplug and remove it, then clip in the included water cup and plug extension on the new one, hook it on the two screws previously loosened and turn it on. I do not understand the other reviews complaining about fitting the wire, I just looped it up above the unit along the side wall, it's out of the way and out of sight. This one has replaced the wire bail that used to sense the ice in the tray and could be used to turn off the icemaker with a paddle and switch. Looks like GE may have recognized the old system had some design flaws (like a little plastic gear that made the whole thing run) and fixed them. I consider this not just a replacement but an upgrade!