Fits: Ford 3-valve 4.6L & 5.4L engines, including the 2008-2010 Mustang GT 4.6L 3V and 2008-2010 Ford trucks with the 4.6L or 5.4L 3V.
Gappable spark plug for the 3-valve Ford engines. The Brisk one-piece shell design for the 2008-2010 Mustang & Ford Truck (4.6L & 5.4L 3V) allows for easy setting of the spark plug gap without requiring a specialized spark plug gapping tool, as well as unshrouding the spark plug flame, allowing for better flame front dispersion and improved power.
Brisk Silver Racing Spark Plugs have a smaller diameter silver core and a conventional open spark hook type earth electrode, giving outstanding performance in igniting high octane fuel mixtures associated with alternative fuels like CNG, LPG, Propane, E85 blend, Alcohol, LNG, Race Fuels and Nitro.
Silver is the best conductor of any metal! It conducts 560% more electricity and 481% more heat than Platinum, and 276% more electricity and 177% more heat than Iridium.
Specifications:
- Thread Diameter: 12mm
- Thread Reach: 27mm (1.06")
- Hex Size: 14mm (9/16")
- Seat Type: Tapered
- Center Electrode Material: Silver
- Resistor: Yes
- Projection: Non-Projected
- Heat Range: 10
