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  1. June 27th, 2006, 09:16 PM #1
    AJ in NH
    [OP] AJ in NH is offline
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    Default Spark plugs 1978 mercury thunderbolt 70hp

    I have NGK BUHW on my outboard I went to mercyryparts.com they say to use QL-76v which is equivalent to BUZHW, Now I am confused. because NGK BUHW is equivalent to Champion J6C S. S which Spark plugs should I use?

    Thank you
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  2. June 30th, 2006, 12:10 AM #2
    imported_ohno_mrbill
    imported_ohno_mrbill is offline
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    Default Re: Spark plugs 1978 mercury thunderbolt 70hp

    Check this site out. You can look up your motor and be sure of the correct plugs !
    http://www.ngksparkplugs.com/

    Good luck.
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