Hydraulic lines for turbo feed and return
We have used it too for fuel line and have never one had an issue with it!!
As for the line -4 would be 4/16ths which equates to 1/4
-6 is 6/16ths which equals 3/8"
-8 is 8/16th which equals 1/2"
-10 is 10/16ths wich equates to 5/8s like said above...
all the JIC fittings that you will find on hydraulic line will work on AN fittings.



