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• 100% Pure silicone jacket resists oil penetration, for lifetime protection against wire set failure
• Stainless steel Mag winding delivers maximum voltage to the spark plug for a hotter, more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static
• Backed by a "no hassle" lifetime guarantee

• Offers excellent noise suppression
• You can depend on NGK for quality and reliability
• Features outstanding durability and consistent performance

• Features iridium with high melting point
• Stable combustion during idling
• Low fuel consumption

• DiamondFire electrode technology that creates a superior spark and resulting flame front extending further into the cylinder, producing more localized pressure
• Drastic potential emissions reduction when used in 2 and 4-stroke engines (after 50 hours): 58% CO emissions reduction, 42% hydrocarbon reduction
• Near elimination of performance inhibiting carbon deposits, dramatically longer plug life and a 5-year/100,000 mile limited warranty

• Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
• Features superior anti-corrosion and anti-seizing properties
• You can depend on NGK for quality and reliability