What size of fuel line connection?

[03TermiCobra]

What size is the factory fuel line connection on the spring loaded clip that connects to the fuel rail? I tried a 1/2 and 3/8 inch disconnect tool and can't get them to work. All help is appreciated! Thanks!

 

[earico]

5/16" if I remember right. Sorry its been a few months since I did it.

 

[SlowSVT]

5/16" if I remember right. Sorry its been a few months since I did it.

5/16 is correct

............not even an AN6 :nonono: