Product review (5 stars): This part will supersede the older style filter housing with a little work.
My Frigidaire refrigerator had the old style filter housing with the O-ring on the outside of the housing. It always had problems leaking and even after replacing the O-ring. This second-generation part is engineered much better and has the O-ring in the bottom of the cup. It is made heavier at the connections but this is the reason I had to adapt using 5/16" to 1/4" reducing elbows which are not supplied with this unit. Another issue was that my old part had the 1/4" connections left and right where as the new part has the 5/16" connections front and back. This new arrangement makes the front polytubing too short. There is a protective rubber grommet is molded to the original tubing so you can't just slide a little more length through the grommet. I used a piece of 1/4" rubber air hose and some new 1/4" polytubing. The rubber hose will protect the polytubing fine. I have had no negative issues since the install. The filter changes are much easier now because the cup opens much easier than the old unit and there are no leaks. To remove the top cover you will need a skinny 1/4" nut driver. A 1/4" socket and drive will be too big to fit into the screw holes of the cover.