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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

• Bosch EXCLUSIVE tapered laser-welded platinum ground electrode provides more area for flame growth and increased durability
• Factory set pre-gap ensures ease of installation
• 360° continuous laser welded center electrode provides unmatched resistance to thermal shock that can occur in today's high performance engines

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

• Significant potential fuel efficiency improvement: > 4% to 13% (depending on engine class)
• Near elimination of performance inhibiting carbon deposits, dramatically longer plug life and a 5-year/100,000 mile limited warranty
• Drastic potential emissions reduction when used in 2 and 4-stroke engines (after 50 hours): 58% CO emissions reduction, 42% hydrocarbon reduction