Difference between an DR8ES spark plug and a DR8EA spark plug
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  1. #1
    Super Moderator goldenhtr's Avatar
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    They're almost the same plug - according to NGK's spark plug guide the S has a standard 2.5mm electrode and the A is a 'special design' - no more info given than that!



    Read more: http://wiki.answers.com/Q/Difference...#ixzz21BC7PPr4





    Anyone have any more info. This is the plug I bought today. Should I get the dr8EA or stick with the dr8ES?
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  2. #2
    Senior Member bcscammell's Avatar
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    Quote Originally Posted by goldenhtr View Post
    They're almost the same plug - according to NGK's spark plug guide the S has a standard 2.5mm electrode and the A is a 'special design' - no more info given than that!



    Read more: http://wiki.answers....g#ixzz21BC7PPr4





    Anyone have any more info. This is the plug I bought today. Should I get the dr8EA or stick with the dr8ES?
    Because you are unsure I would stick to the A version. There may be a specific reason for the difference in end construction of the plug that we are unaware of.

  3. #3
    Senior Member rm_hm's Avatar
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    Good mystery you have here



    Ngk cross ref from regular to iridium plugs shows something is afoot

    DR8EA = DR8EIX

    DR8ES = DR9EIX

    DR8ES-L = DR8EIX



    I've seen bits about special design meaning "The electrode has a small split on the end of it to help produce a better spark".

    But someone else said special design meant " If you look closely at porcelain part below the firing tip and will see how far sunken it is below the thread part".







    ES



    EA





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