Author Topic: Spark Plug question.....  (Read 501 times)

Offline Glennster

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




wagesofsin

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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.