Mustang Ford Racing Cold Spark Plug Set 16mm Thread 3V 2005-2008
Part Number: M-12405-3V0
Set of Eight Ford Racing 16mm Thread Cold Spark Plugs for 2005-2008 3V Mustangs.
For use in engines with higher than stock cylinder combustion pressures or sustained high rpm. One heat range colder than the stock Mustang GT spark plugs. Fits 2005-2008 3V heads requiring the 16mm thread.
*If you have a 2008 Mustang, you need to determine if you have 2005-2008 "high thread" 16mm spark plugs or 2008-2010 12mm spark plugs. This can be determined by looking at the coil engineering number. If you have a 3L3E number, you have 16mm spark plugs, if you have an 8L3E coil engineering number, then use the 12mm version (M124053V12).