It worked, replacement was pretty straightforward (though I don't recall there actually being instructions, probably since there are different models of refrigerators it is used for - I used a youtube video), no more leaks (for now). Shouldn't have busted in the first place, one of many design flaws with this fridge.
-------------- EDIT 8/17/17 -----------------
So here we are again, about to buy the same part. Why? Because the root cause of this thing busting (aside from a weak design - as I said before, this shouldn't just bust) is water getting frozen somewhere in the line. A terribly common problem with these refrigerators, YouTube even has videos of people using blow dryers inside of their freezers to thaw the line. I am a couple months shy of my one year anniversary with this product, so I am going to see how the 1-year warranty process plays out before ordering a new one. Or not. At this cost, it's probably not worth the hassle of chasing a warranty...
--------------EDIT 10/11/17------------------
So just for fun (and as a public service), I decided to chase down the 1-year warranty. It wasn't worth the hassle, though the rep at GE was very helpful in making sure they actually DIDN'T honor the warranty on parts not purchased directly through them. So I am knocking this down to a 1-star product. Original part was bad, replacement part was bad, warranty isn't honored (they shouldn't post it on Amazon if they don't honor it within the Amazon purchasing system) and it is just a matter of time before the part I just got a few weeks ago starts leaking again since (as usual) the water line is ONCE AGAIN frozen in my refrigerator. I'd knock the fridge down to a 1 as well if I was reviewing it since this is a widespread problem. You will be happy with this part for a short while, but everyone who still has 4 or 5-star reviews just hasn't had it long enough for it to develop a leak again as soon as things freeze up. THE PART SHOULDN'T JUST BUST when water pressure is applied. PERIOD.