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• Features iridium with high melting point
• Low fuel consumption
• Long life and high reliability

• More durability and a higher melting point than platinum
• Better center electrode anti-oxidation and anti-erosion
• Superior Anti-Fouling and Improved ignition

• Four yttrium enhanced ground electrodes resist spark plug wear and oxidation for exceptional performance life
• 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

• Constructed from durable material
• Taper cut reduces the voltage necessary and provides better throttle response
• Easy installation

• 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