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Replace o-rings on HOSE FITTING for cool fuel gen 3

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by Tri County Trail, Feb 4, 2023.

  1. Feb 4, 2023 #1
    Tri County Trail

    Tri County Trail Member

    67
    Aug 29, 2021
    2005 Rinker 360
    Mercruiser 8.1l Bravo 3s
    Replace o-rings on HOSE FITTING for cool fuel gen 3

    I am pulling my older style hose fittings on my gen 3 cool fuel module they are slightly dripping.
    Anyone have the size or part number for these on the white plastic plugs.
    I would like to have them on hand before I pull them,
    Thanks
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  2. Feb 4, 2023 #2
    scoflaw

    scoflaw Well-Known Member

    5,925
    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx 502 mag
    2005 Baja 242 islander 496
    502 mpi Bravo 1
    496 mag B1
    I don't have the answer to that question but what I can tell you is the problem is not the O-rings but corrosion on the aluminum where the O-rings seal
     
  3. Feb 4, 2023 #3
    Tri County Trail

    Tri County Trail Member

    67
    Aug 29, 2021
    2005 Rinker 360
    Mercruiser 8.1l Bravo 3s
    I will clean it once I pull it apart and see how bad it is fresh water only. Newer to me boat, Just would like to have parts on hand. I know there are other fixes, I will check it out first
     
  4. Feb 4, 2023 #4
    scoflaw

    scoflaw Well-Known Member

    5,925
    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx 502 mag
    2005 Baja 242 islander 496
    502 mpi Bravo 1
    496 mag B1
    Mercruiser parts.com enter your engine number and the parts diagrams will be there with numbers
     
  5. Feb 4, 2023 #5
    Tri County Trail

    Tri County Trail Member

    67
    Aug 29, 2021
    2005 Rinker 360
    Mercruiser 8.1l Bravo 3s
    They don't list o rings only complete hose kit.
     
  6. Feb 12, 2023 #6
    sejensen737

    sejensen737 Member

    118
    Apr 3, 2010
    Sarnia
    2006 340
    8.1 Mercs
    I would suggest you do what Mercruiser did. Replace that crappy setup with threaded brass nipples.
     
  7. Feb 12, 2023 #7
    wyrman

    wyrman Well-Known Member

    1,806
    Jul 12, 2012
    Tri-Cities, Wa
    2007 310 Sundancer
    Twin 350's, V drives
    2003 Fisher 17 aluminum
    90hp Honda 4 stroke
    Cleaning it up and replacing the orings is NOT the fix for this problem.
    Email this guy and ask if he has any SS fittings left. max@traxxion.com
     
  8. Feb 12, 2023 #8
    scoflaw

    scoflaw Well-Known Member

    5,925
    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx 502 mag
    2005 Baja 242 islander 496
    502 mpi Bravo 1
    496 mag B1
    SS into aluminum is a no no. Merc offers plastic/nylon for replacements. There is little to no meat there to tap the housing. Bubble gum it together until it fails and then buy an updated housing.
     
  9. Feb 12, 2023 #9
    wyrman

    wyrman Well-Known Member

    1,806
    Jul 12, 2012
    Tri-Cities, Wa
    2007 310 Sundancer
    Twin 350's, V drives
    2003 Fisher 17 aluminum
    90hp Honda 4 stroke
    I know all about the dissimilar metals. These are a pretty good fix, and mine are doing just fine. That's it for my input, not going to argue with anyone about it.
     
  10. Feb 12, 2023 #10
    sejensen737

    sejensen737 Member

    118
    Apr 3, 2010
    Sarnia
    2006 340
    8.1 Mercs
    I stand corrected. I believe they are plastic/nylon.
     

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