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  1. #1
    Member
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    Aug 2017
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    Knoxville Tn
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    187

    Mercury Promax Engine Swap Parts Requirements

    I’m getting ready to swap my Mercury Promax 225 to a 2017 Mercury Racing 250. What all parts will be required?

  2. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
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    14,036
    #2
    harness adapter 896542t01, possibly hub kit for 1.25 prop shaft, possibly rigging tube small or large theres 2 that will fit 3.0L
    .................................................. ...the scariest thing in life is the unknown ...................................

  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
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    Greenville, SC (US)
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    95,243
    #3
    Good time to upgrade your fuel line as well... and make sure your remote oil tank is CLEAN, lines are in good condition, etc.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
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  4. Member
    Join Date
    Aug 2017
    Location
    Knoxville Tn
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    187
    #4
    Thanks, I appreciate your help.