NEW
2004-2008 Ford Truck
5.4L Engine
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5.4L 3V COLD SPARK PLUG (16 MM THREAD)
This part supersedes Ford Performance M-12405-3V0
Fits 2005-2008 3V heads requiring the 16 mm thread
For use in engines with higher than stock cylinder combustion pressures or sustained high rpm
Unique design is proprietary to Ford 3-valve engines
One heat range colder than the stock Mustang GT plug
Two heat ranges colder than the stock 5.4L-3V truck engine plug
Sold in engine set of 8
Use M-12405-3V12MM spark plugs for 2008 and newer 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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