I'm attempting to change the fuel filter on the frame of my 2005 Excursion and notice that the new one has an o-ring and the old one doesn't. It doesn't seem to be fitting as well. Did they change the style of the filter? The new one looks more like the 6.4 filter. I have been to Advanced Auto and looked at a new Motocraft. It has the o-ring. The one I'm trying to put in is a Racor. It has the o-ring. I also looked at a Navistar and it has the o-ring. Please help, I need to put this back together so my wife can drive it to work in 8 hours.