Mercruiser 7.4 Oil Lines

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by emahaffey, Feb 5, 2018.

  1. emahaffey

    emahaffey New Member

    Jun 29, 2009
    Southern Marlyand
    1994 Sundancer 270
    7.4L 454 Mercruiser w/Bravo III Drive
    The oil lines on my Mercruiser 7.4 Gen V are leaking at the point where the hose is connected to the fitting. It's just a slight drip, but it's enough to make a mess. I'm looking to replace them, but have found out that they are no longer available. I'm assuming this is because people have started to make them on their own? Or have them made? Anyone have any suggestions on where to find them, or how to have them made?
  2. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 EC
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin 546s Plotter
    454 Crusaders
    There are hydraulic hose fabrication shops in every major metropolitan area. They fabricate all kinds of hose for heavy equipment and trucks. Ask at any NAPA parts store and they will steer you in the right direction.
  3. midexp

    midexp Active Member

    Oct 5, 2016
    Harrison Township, Michigan Lake St.Clair
    1999 40' Sundancer
    454 merc
    If your boat is a 1994, I'm sure you can get them. If you have your engine serial number, call Michigan Motorz. They will have the best price and ship to.
  4. Air O'Nautical

    Air O'Nautical Active Member

    Feb 5, 2008
    Stamford CT "Ponus Yacht Club"
    1995 400EC. Raymarine E80,4kw dome, Garmin 235 gps,
    2013 7.4L Mercruiser Blue water.
    Hurth straight shaft 630's,
    Westerbeke 7.0 BCG
    Search Hydraulic hoses in your area..
    Easily custom made to order and not expensive.
    Luckily I have a local shop in my town that made one for me on-the-spot :)
  5. Boater420

    Boater420 Well-Known Member

    Mar 11, 2015
    Clearwater, FL
    '97 330 Sundancer
    Westerbeke 4.5BCG
    Twin Merc 454's
    If you have the hoses made locally by a hydraulic shop, make sure to get the brass fittings. Since most hydraulic shops are making hoses for trucks and heavy equipment they don't all carry brass fittings. You might have to special order the fittings, but they can definitely make the hoses.
  6. Jandcinok

    Jandcinok Member

    Jan 18, 2016
    Grand Lake Of The Cherokees, oklahoma
    1995 3570
    Mercruiser Bluewater 7.4's w/ Hurth transmissions and V drives
    I just went through the same issue. The hose I needed showed discontinued everywhere I looked, I did finally find one on closeout, priced well north of $100. I went to the local hydraulic hose warehouse, they built just what i needed, $16.
  7. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    If all else fails you can look for a shop that specializes in auto air conditioning. They make them all the time.

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