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• 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

• Replaces NGK part number bpm7a; provides more complete combustion
• Replaces Autolite part number 2974
• Replaces Bosch part number ws5f

• Improved cold-starting
• Stable combustion during idling
• Efficient fuel consumption

• Iridium-enhanced 6mm center finewire electrode for improved ignitability, durability and wear resistance
• V-trimmed platinum sidewire electrode technology resists wear
• Original Equipment (OE) form, fit and function five-year limited warranty

• 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
• 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