E3 Part # E3.38. Thread: 14mm, Reach: 3/4". Champion Reference: G3, G57C, G59C. NGK Reference: CR7E, CR7EIX, CR8E, CR8EHIX9, CR8EIX, CR9E, CR9EHIX9, CR9EIX, CR9HIX9, IMR8C9H, IMR9A9H, IMR9C9H, IMR9C9HE, IMR9D9H, MR8A19, PMR6B, PMR7A, PMR8A, PMR8B, PMR9B.

• Unique electrode shape maximizes the power created by the spark plug - Diamond Fire technology
• Electrode is a combination of performance and technology that results in an improved flame kernel shape
• The result is more complete combustion and an improvement in engine performance
• 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