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OEM Spark Plug Part Number?

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Old Mar 5, 2009 | 11:45 AM
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Default OEM Spark Plug Part Number?
Need part number for OEM LS1 spark plug?

Thanks
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Old Mar 5, 2009 | 12:28 PM
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Originally Posted by wolfman04
Need part number for OEM LS1 spark plug?

Thanks
AC part # 41-974. Gap .060
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Old Mar 6, 2009 | 10:01 PM
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They have been updated several times to Iridium plugs now.

12609877 – GM AC Delco Iridium spark plugs – 6.28 each
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