which fuel/nitrious fittings ..-3AN or -4AN

[johnmarines]

I need to replace my fuel and nitrious lines that go from my Nx express wetkit selenoids to the nozzle. Which size do I need.. the -3AN or -4AN fittings?

 

[-red97rum-]

I need to replace my fuel and nitrious lines that go from my Nx express wetkit selenoids to the nozzle. Which size do I need.. the -3AN or -4AN fittings?

The lines from solenoids to the shark nozzle on my NX Proton kit are -3 lines.

 

[johnmarines]

Thank you sir.... time to order.