Recommended A-N Hose sizes for various applications

- 4 = Oil & Fuel Lines, Gauges & Vacuum Lines

- 6 = Carburetor, Fuel & Oil Lines

- 8 = Water, Fuel & Oil Lines

- 10 = Oil & Fuel Lines, Heater Hoses

- 12 = Water, Fuel & Oil Lines, Heater Hoses

- 16 = Water, Dry Sump & Fuel Lines, Heater Hoses

- 20 = Fuel, Water & Oil Return Lines

- 24 = Water & Radiator Lines

Drag Tech Tip: A dash ( - ) indicates A-N hose size, where a ( # ) indicates A-N fitting size.

A-N Fitting Size  

#2

#3

#4

#5

#6

#8

#10

#12

#16

#20

#24

#28

#32

Tube Diameter

1/8"

3/16"

1/4"

5/16"

3/8"

1/2"

5/8"

3/4"

1"

1 1/4"

1 1/2"

1 3/4"

2"