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• Factory pre-set gap allows for easy installation that never requires adjustment
• 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
• 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

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

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

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

• Never requires gapping, the electrode gap is factory-set and never requires adjustment
• Provides ease of installation - never requires adjustment
• Four yttrium-enhanced ground electrodes provide optimum access to the air/fuel mixture for the most efficient combustion, plus the yttrium alloy ground electrodes reduce gap wear and oxidation for extended performance life