Product review (2 stars): Please see my UPDATE - New filter not working at all.
The short: Arrived promptly, perfect fit for our GE Profile side-by-side; water tastes as good as while using the OEM GE filter, which costs more than twice as much. Before installing, I did soak the filter in water for about 5 - 10 minutes. Once installed, no leaks. Easy peasy. (I also date my filters with a sharpie, so I'll know (remember) when I installed the unit.)

11/10/2015 Update: I reordered this part after the old one provided a year of service. Unfortunately, the new one did not connect securely and water would not flow through the filter. After closer examination, I noticed that the insert on the "new" filter was different from the older model. I have no idea why they changed it, but it will not work. (See attached pictures.) Note that the filter with the blue "x" is the one that did work. I've sent this one back and ordered a genuine GE replacement... $ 11.00 more, but it should work; I hope. ;)