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• Positive mechanical locking feature means the insert will never come out
• The only thread repair product that can be used to repair both taper seat and gasket type spark plug assemblies
• The piloted reamer tap means no drilling is necessary and perfect alignment of the tapped hole

• Fine platinum tip reduces required voltage
• Constructed from durable material
• You can depend on NGK for quality and reliability

• Exclusive platinum technology in the center electrode for quicker starts, smoother acceleration and increased fuel efficiency
• Factory-set gap ¿ once the proper gap is set, there's no need to re-gap
• Contains one spark plug

• 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

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