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Is there Difference between Champion 3X Spark plugs
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05-22-2013, 07:31 AM
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Tom Wesenberg
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Join Date: May 2010
Location: Mpls, MN
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Re: Is there Difference between Champion 3X Spark plugs
The diamond knurling pattern stands OUT on original plugs and they go IN on the repro 3X, plus the knurling doesn't run all the way down on the modern 3X.
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