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    Author Topic: Spark Plug question.....  (Read 490 times)

    Offline Glennster

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    • Posts: 879
    Spark Plug question.....
    « on: December 10, 2009 - 09:22:05 PM »
    What's the difference between these Champion plugs?
    3405
    RN12YC
    Thanks!
    Logged


    wagesofsin

    • Guest
    Re: Spark Plug question.....
    « Reply #1 on: December 11, 2009 - 08:16:06 AM »
    3405 is a platinum plug, rn12 is a copper core.
    go copper.
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