Product review (5 stars): Buy it if this is what you need, easy install
This was spec'd as my original replacement part in the manual and it was a dead on match for the original.  Very easy install, took just seconds.  Water tastes clean and pure, but it's not like I'm a scientist running any sort of valuable test.  I ran the original for upwards of four years, water quality still seemed decent but figured it was time.  Putting the new one in seemed to open up the flow rate a little and tastes more pure.

If you need it, buy it.  Check your fridge owners manual for the correct part number.