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

• 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
• 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

• Smaller, more efficient, Iridium electrode designs are to improve cold starting, quicker acceleration, and lifespan
• Designed to last over 100,000 miles in most applications
• ACDelco is an Original Equipment (OE) supplier and has the experience engineering and manufacturing components that achieve the highest quality standards required by vehicle manufacturers

• Constructed from durable material
• Features superior anti-corrosion and anti-seizing properties
• You can depend on NGK for quality and reliability

• Fine Iridium tip ensures high durability
• Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
• Features superior anti-corrosion and anti-seizing properties