Ford Performance Spark plugs, 3V cold for supercharger, (2008-2010 12mm)

Ford Performance Spark plugs, 3V cold for supercharger, (2008-2010 12mm)

• Fits 2008 and newer 3V heads requiring the 12 mm thread
• For use in engines with higher than stock cylinder combustion pressures or sustained high rpm
• One heat range colder than the stock Mustang GT and 5.4L-3V truck engine spark plugs
• Sold in engine sets of 8
• Use M-12405-3V0 spark plugs for early style 2005-2008 3V heads
• Note:
• 2008 engines with late style 12 mm spark plugs can be identified by coil engineering number 8L3E
• 2005-2008 engines with early style 16 mm "High Thread" design spark plugs can be identified by coil engineering number 3L3E part number
• All 2009-2010 engines use 12 mm spark plugs

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