3V Cold Spark Plug Set (12 MM Thread)

$100.00

SKU: M-12405-3V12MM Ford Performance

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Product Availability: In Stock
  • 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
  • NOTES:
    • 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