Ford Performance Parts 3V Cold Spark Plug Set (16mm Thread)
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 sets 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
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007 - 2008 | Ford | F-150 | FX2 |
| 2006 - 2008 | Ford | F-150 | Harley-Davidson Edition |
| 2005 - 2008 | Ford | F-150 | STX, FX4, Lariat, XL, XLT, Flotillera, King Ranch |
| 2008 | Ford | F-150 | THE 60TH ANNIVERSARY EDITION, XTR, Limited |
| 2008 | Ford | Mustang | Bullitt, Shelby GT500KR, Shelby |
| 2005 - 2008 | Ford | Mustang | GT, GT Equipado, Base, GT Base |
| 2007 - 2008 | Ford | Mustang | Shelby GT500, Shelby GT, Lujo |
Products received may vary slightly from images due to manufacturing tolerances or supply chain variables.
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