Thread: spark plugs
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Old 01-02-2005, 10:36 PM   #6
Uncle Scotty
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Join Date: Mar 2002
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An NGK sparkplug that has a '-11' at the end of the number is pre-gapped at 1.1mm or .0433" That is the WRONG plug because the SAME plug WITHOUT the '-11' is pre-gapped at .7-.8mm or .0275-.0314" which is the CORRECT plug to start with, for a WRX.

This IS on NGK's website...
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