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Fuel System

Fuel Lines ?'s

AN number conversion to inches

New Member
Posts: 11
From: Winthrop Harbor, IL USA
Registered: Apr 2002
posted 07-04-2002 08:49 PM

Anybody point me to a chart that converts AN numbers to inches? Like AN -6 equals ...? I'm looking for the AN equivalent to both a 5/8 and 3/4 in. ID hose. Thanks.

Posts: 7111
From: Ohio
Registered: Nov 1999
posted 07-04-2002 08:54 PM

I'm thinkin the 6 = 6/16ths,
and the 10 = 10/16ths.
and so on
so 6 is 3/8
and 10 is 5/8ths
and 12 is 3/4's

451 Jim
Moparts Member
Posts: 1574
From: Lexington Park Maryland
Registered: Dec 2000
posted 07-04-2002 09:52 PM

Check carefully. I think AN-6 is for use with 6/16=3/8 tubing, ie the fittings match. But the ID is not 3/8" like the tubing. The AN hose has a smaller ID. Go measure some -8 hose, it is about 0.40" ID.
OK, check the aeroquip site:
Depending on the specification, the ID varies a little. For -8 hose:
MIL-H-8794 0.406" min ID
MIL-H-5593 0.477" min ID

The first is typically for fuel.

And for Earl's hose:
-8 hose is 7/16" ID

Moparts Member
Posts: 251
From: Manheim Pa.
Registered: Sep 2001
posted 07-04-2002 09:56 PM

Each dash number is equal to 1/16" in OD of the tubing that it replaces.

Moparts Member
Posts: 325
From: Decatur Alabama
Registered: Oct 2001
posted 07-04-2002 10:17 PM

Carl and Mopar Dad hit it on the head. 6/an line hooks right up to my 3/8" hard line from the tank with the right fittings of course.

info provided by members above

Aluminum Fuel Line

Moparts Member
Posts: 127
From: Houston, TX, USA
Registered: Apr 2001
posted 11-19-2002 05:30 PM

I'm thinking of getting aluminum fuel line. What's the best brand? Tips and tricks? I'll need to use 1/2". Who makes the best tube bender and fittings? Thanks.


Moparts Member
Posts: 1002
From: Renton, Wa US
Registered: Sep 2001
posted 11-19-2002 05:36 PM

1/2 tubing is 1/2 inch tubing .. id order the stuff from summit, most likely the cheapest ... aerquip and earls are the fittings of choice by racers .... its pretty soft stuff, so pretty much any tubing bender will work, i didnt even use one.


Moparts Member
Posts: 1293
From: Hillsboro, OR, USA
Registered: Apr 2001
posted 11-19-2002 05:53 PM

You should be careful where you route it because it is so soft... keep it away from places that have the possibility of rocks or debris flying up.


Moparts Member
Posts: 3812
From: Rancho Cucamonga, So. California, USA
Registered: May 2001
posted 11-19-2002 06:07 PM

My first 25-feet were Moroso.
My second 25-feet (return Line) were from a local Chain-Type Hardware store. Looks IDENTICAL to me and a bit cheaper/easier to find at hardware stores.

Used Tubing Cutter to cut to length


Moparts Member
Posts: 1057
From: moscow pa. u.s.a.
Registered: Apr 2001
posted 11-19-2002 06:31 PM

i used aluminum on my car, it bends and flares real easy. use a bender it looks a lot nicer than doing it by hand.


Moparts Member
Posts: 1295
From: Spring (NW Houston), TX, USA
Registered: Mar 2000
posted 11-19-2002 08:52 PM

You can get a cheap-o-deluxe spring bender set from Sears for <$10. Probably have them at other hardware stores as well. Helps prevent pinching during bends


New Member
Posts: 2
From: Baltimore Md. U.S.A.
Registered: Nov 2002
posted 11-19-2002 10:17 PM

Be sure to flush it before you hook it up or you will tiny bits of aluminum go through your carb..........Big problems!!!!!!!!!


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