Features a unique electrode shape with Diamond Fire technology to maximize power. The improved flame kernel shape ignites the air/fuel mixture faster, creating a more localized pressure front for faster pressure rise, resulting in more complete combustion and improved engine performance. A truly premium performance plug. Sold each.

• This flame front ignites the bulk air/fuel mixture faster, moves heat into the combustion chamber faster and creates a more localized pressure front for faster pressure rise during the cylinder power stroke
• Electrode is a combination of performance and technology that results in an improved flame kernel shape
• Unique electrode shape maximizes the power created by the spark plug - Diamond Fire technology
• The result is more complete combustion and an improvement in engine performance