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I had a post going about doing the TANK fitting. I seem to recall they take dash 205 o-rings, which are the same on the hose end fitting. They appear big but they are right. (Don’t go buy 100 of them until I double check that number!)
The problem is, there are two o-rings. One is easy to change. The other has the check ball up against it, under spring pressure, all the time. On the TANK fitting, you can remove the pick-up from the tank, remove the tube and reach in with some small tool to hold the ball and spring out of the way. On the hose end, you can’t.
I still have not figured out an easy way to do a hose end. The twist latch part IS just pressed in. I actually sawed a whole hose end fitting in half and made a cut away, to know exactly what I was dealing with. (I could send you a pic if you want it.) However, that thing is a really tight fit. I made a special puller and heated the fitting, but the twist latch ears still snapped off, when I tried to pull one out. Your luck may vary.
Long live American manufacturing!