Product review (5 stars): Exact fit and functions great...
I purchased this after the water flow had slowed down to almost a trickle.  I received it in less than 16 hours after ordering (thank you Amazon!) and it took a couple of minutes to install.  The water flow is strong and the water tastes great.  I have no idea how long this will last, but given the fact that it is significantly cheaper than the authentic GE product with great Amazon reviews behind it, I'm certainly happy to have bought it.