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  1. #1

    Default replace Y pipe 3" (exhaust pipe)

    Hi all,

    I have old and leaking Y exhaust pipe on one of the engines on my 87 Sea Ray Sundancer dual 4.3 262 V6 with MR outdrives.

    I am unable to find 3" pipe part #99877A9 anywhere.
    Question: can I use 4" pipe instead and maybe some sort of adapter? any help will be appreciated.

  2. #2
    Join Date
    Dec 2011
    Left Coast

    Default Re: replace Y pipe 3" (exhaust pipe)


    There looks to be quite a number of them on Ebay, not sure if these are 3", you could ask the sellers, if not do a search. http://www.ebay.com/itm/Mercruiser-E...f0bb0e&vxp=mtr

    Last edited by Reverend Bob; 08-23-2012 at 12:57 PM.
    Rev Bob

    "if it's gonna happen, it'll happen out there!"

    My Dad always said; "Everything on your boat is either broken or about to be.......and you just don't know about it yet".

  3. #3

    Default Re: replace Y pipe 3" (exhaust pipe)

    thanks, thats what I do, and its always a 4"

  4. #4
    Join Date
    May 2007

    Default Re: replace Y pipe 3" (exhaust pipe)

    Factory Manual Best, Seloc 2nd best, Clymer if you're desperate.

  5. #5

    Default Re: replace Y pipe 3" (exhaust pipe)

    Thank you. I was looking by new part # which did not give me any results, but now I understand that I should have checked by using different keywords. Again, thanks a lot!

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