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Fuel line diameter for saltwater 130hp: 3/8 or 5/16

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  • Fuel line diameter for saltwater 130hp: 3/8 or 5/16

    Which fuel line diameter is recommended for a saltwater 130hp? 3/8 or 5/16? Thank you for your help.

  • #2
    what size does your motor have already?
    I would think it was metric

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    • #3
      5/16 if converting.
      check out Goodyear 307R I don’t think it has a liner.

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      • #4
        I am not sure. Existing installation has a: 5/16 (8mn) line from tank to water separator filter, and a 3/16 line to the outboard. Should the lines have tge same diameter?

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        • #5
          Originally posted by david123 View Post
          I am not sure. Existing installation has a: 5/16 (8mn) line from tank to water separator filter, and a 3/16 line to the outboard. Should the lines have tge same diameter?
          Is 3/16" , ^^^, a typo (I hope)?

          If the tank to fuel filter is 5/16th's, you can keep it the same...


          Make sure you get MARINE RATED FUEL LINE.

          It does make a difference with ethanol breaking down the innards of some regular fuel line...

          Scott
          1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

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          • #6
            3/16 was a typo... I meant 3/8.

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            • #7
              IMO, I'd put 3/8's on.

              My old neighbors v6 200 (on an old Mako), two stroke had 5/16" and he never had an issue with that either..
              Scott
              1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

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              • #8
                From my tank to the water separator is 3/8" then from the separator to the F150 is 5/16". On my other boat It's also 5/16" to my F115

                aka Reel Kahuna

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