This example compares 6an and 8an supply fuel lines both are 14 long. Where every dash number is 116 of an inch an an6 fitting would be equivalent to 616 or 38 fitting size.

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6an fuel line size. Sold by partschoice and ships from amazon fulfillment. The an size number is correctly displayed with a dash before the number. For example an an size 2 designates a tube od of 18 2 x 116 the tube od of an size 3 is 316 3 x 116. This means that 6an hose will not introduce any appreciable flow restriction in a fuel system designed around 38 od rigid tubing. It seems that a couple of psi will not change much. Quick reference for an to inch line conversion 6an 38 8an 12 10an 58 12an 34 fuel line sizing.
Standard automotive hose size. 6an 38 od 8an 12 od 10an 58 od 12an 34 od. Now the fittings are pretty easy to figure out and an fittings could be measure in dash sizes. 3an 4an 6an 8an 10an 12an 16an ptfe e85 braided stainless steel oil. A question that is often asked of me when dealing with high horsepower applications is. The an numbers refer to the tubing od in sixteenths of an inch.
46 out of 5 stars 29. An8 816 or 12 for example. A 38 standard hose equals 6 an. Nearly 4 psid 8an fuel line. For example 8an hose has the same id as a 12 nominal tube 816 12. The amount of pressure drop we can expect for 14 fuel lines at 110 gph is 6an fuel line.
My fuel line is nominal 38 id. 6an 6 an 6 male to 38 fuel hose line tube straight fitting adapter not fit for teflon fuel line. Evil energy 10ft 6an 38 ptfe fuel line e85 tube nylon stainless steel braided universal black 81mm 516id 49 out of 5 stars 10. Free shipping by amazon. Popular fuel line sizes. 25 foot 6an fuel line hose an 6 38 universal braided stainless steel cpe fuel line 4098 in stock.
Referring to graph a. Using your automotive hose size choose from the chart below to find the an equivalent for hose hose ends and adapter fittings. 3an hose has the same id as a 316 tube.