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• Fused iridium and platinum center electrode, sintered into an extended insulator nose results in reaching self-cleaning temperature only seconds after starting and provides exceptional wear resistance
• Four yttrium enhanced ground electrodes resist spark plug wear and oxidation for exceptional performance life
• Revolutionary surface air gap firing technology featuring Bosch's unique four ground electrode design delivers the most powerful spark for the most efficient combustion and optimum horsepower without increasing the voltage requirement

• Features superior anti-corrosion and anti-seizing properties
• Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
• Constructed from durable material

• You can depend on NGK for quality and reliability
• Highly durable against electrical and chemical wear
• Insulators constructed from 99 percent pure alumina silicate

• Features iridium with high melting point
• Stable combustion during idling
• Excellent acceleration and performance

• Lower ignition voltage requirement provides reliable cold weather starting and superior operation under all driving conditions
• Factory-set gap ¿ once the proper gap is set, there's no need to re-gap
• Contains one spark plug