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  1. #1

    GP800 Inner Exhaust Joint Split - Size? Silcone Upgrade? Repair?

    The inner exhaust joint developed a crack in it, item #16 in this photo. Looks like a weird size (didn't have a tape on me, but guessing 4.25" or 4.5"). Home depot had a 4" rubber coupler for pvc pipe, haven't had a chance yet but don't think I'm gonna be able to get that sucker on.

    $47 for a new one! Anyone come across this problem before? I see some guys use high temp silicone hosing for exhaust parts, would this be a better solution? Would like to get back out on the water this weekend, anyone know of anything I can pick up locally at plumbing supply, home depot, etc??

    Click image for larger version. 

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  2. #2
    powerstroke specialist mikegp's Avatar
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    got one.

  3. #3
    Just a quick update for anyone who might stumble across this thread in a search......don't buy the OEM yamaha part for $47. Instead, go to home depot and get the Fernco ProFlex 4" rubber coupler. Manufactuer part # 3000-44.

    Remove the metal housing, rubber is a perfect fit. $4

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  5. #4
    Sorry dude hit the thanks button instead of the reply!! You may want to check the specs on this, hence why its 4 dollars....... Only good to 4 psi, and 180 degrees F. Its only a drain waste and vent coupler!!!!!!!!

    Stick with the 47 if thats what it is!!!!

  6. #5
    powerstroke specialist mikegp's Avatar
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    Quote Originally Posted by scittb View Post
    Sorry dude hit the thanks button instead of the reply!! You may want to check the specs on this, hence why its 4 dollars....... Only good to 4 psi, and 180 degrees F. Its only a drain waste and vent coupler!!!!!!!!

    Stick with the 47 if thats what it is!!!!
    thanks. i just didn't want to say anything.
    you just has told him what he need to hear.

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