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  1. #1
    My Boats:
    2006 272 Cobalt
    Join Date
    Feb 2006
    Belleville, IL

    Altenator Upgrade Problem '99 502 Mpi

    Can you guys help me. I am upgrading the stereo in my boat and need to upgrade the stock 65 amp alt (862031T) to something 100 amp+. I contacted but he does not have anything to fit. Are there any ideas out there. PLEASE HELP!!!

  2. #2
    Registered hunster's Avatar
    My Boats:
    94 scarab 29
    Join Date
    Feb 2005
    oceanport nj

    Re: Altenator Upgrade Problem '99 502 Mpi

    Try your local starter alternator rebuilder. They can beef up those gm type units!

  3. #3
    Registered velocitypwrbtr's Avatar
    My Boats:
    1999, Velocity, 280
    Join Date
    Oct 2003
    York, PA

    Re: Altenator Upgrade Problem '99 502 Mpi

    Arco Marine makes several alternators for mercruiser replacement.

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