Fuel injection hose replacement

Hey all. My wife has an '01 LL Bean wagon and I have a quick question.

Several months ago I was replacing her fuel filter, and accidentally cut the fuel injection hose, a bit (the run that goes between the engine and filter, not the filter and toward the firewall). I got some replacement, it's Good Year 5/16."

It appeared at the time to maybe be slightly off, insofar as diameter, but fit pretty well. I got the clamps back on and all of that. Yesterday my wife smelled fuel while driving, and today it was worse, on her way to our office.

I drove over and checked it out; it was dripping from the engine side of that same hose. I tightened the clamp and it stopped.

I have no problem occasionally doing this if necessary, but what size hose is stock? Might just be easier to spend a few bucks and not have to worry about it. Maybe it is indeed a little too big, I don't know.

Thanks.