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• Significant potential power increase: > 6% to 12% (depending on engine class)
• Significant potential fuel efficiency improvement: > 4% to 13% (depending on engine class)
• DiamondFire electrode technology that creates a superior spark and resulting flame front extending further into the cylinder, producing more localized pressure

• 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

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

• Eliminates spark plug failure
• Includes a high voltage semi-conductor resistor for maximum EMI suppression
• Resists corrosion and spark seizure

• Constructed from durable material
• Fine Iridium tip ensures high durability
• Features superior anti-corrosion and anti-seizing properties