3V COLD SPARK PLUG SET (12 MM THREAD)

3V COLD SPARK PLUG SET (12 MM THREAD)

M-12405-3V12MM
Regular price
$210.00
Sale price
$210.00
Regular price
Unit price
per 
Availability
Sold out - $210.00

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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