Here is a quick rundown of types of SAE fuel hose and their applications. video is sponsored by Continental.
Andrew Markel stresses the importance of choosing the right fuel hose type for its application on a vehicle.
Fuel hoses are not universal. Outside of the dimensional requirements, fuel hoses have requirements for permeation, pressure and the type of fuel they can carry. This can get even more confusing when you start looking at the lettering on the side of the hose.