Product review (4 stars): Not bad...DO NOT throw out your old one before installing
One thing I discovered is this part is listed under at least one other model number depending on where you look for it (in my case, a GE part lookup site, where this part number was in the URL but a different one was displayed on-page).  That said it seems to be a pretty much universal icemaker for GE refrigerators, and in my case the Amazon price was well below what the refrigerator repair company quoted, and when accounting for the labor cost they would have charged, I saved upwards of $250 this way.

The only part of the installation that was confounding was that for my type of refrigerator, the instructions state to remove the plastic bar that runs across the tray and replace it with the one from the old (broken) icemaker. Problem was, that old one didn't quite fit this one right...it was too big, causing it to buckle slightly. I had to cut down the edge of the inner-most tooth to get a clean fit. No big deal, but a slight over-site by the manufacturer in assuming that the strip from the old icemaker would have the exact same dimensions. It's not a huge issue as this is not a moving part...it simply needs to not block the rotating plastic pins in the tray. I'm guessing that most people don't even bother anyway, and just leave the default strip in there.

Other than this minor adjustment, it was a snap. It fit in my freezer right where the old one went perfectly. It came with a new water tube, but I didn't need it. It also came with the wrong water funnel (where the water falls into the device), but it also had the correct mount for me to place the one from my old icemaker in the correct position, so again, no problems.

All in all, a sort of one-size-fits all replacement that lives up to its billing 99% of the time, and the remaining 1% is easy enough to work around.

And as the heading says, DO NOT throw out your old icemaker. You may need to salvage a couple of rudimentary parts from it to make this one fully compatible with your fridge...in fact, the instructions and design of this unit count on it.

EDIT: I just noticed that a lot of the rows of ice that came out of this icemaker were frozen together. This is typically a result of the tray water level being too high, but I could find no adjustment screw/dial for this. Turns out that it is under the plastic cover of the icemaker (there's just one screw to remove, hidden under a screw cover). Once off I found a screw with a "+/-" by it, which adjusts the water level. All is well now, but sure wish this had been in the instructions.