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• DiamondFire electrode technology that creates a superior spark and resulting flame front extending further into the cylinder, producing more localized pressure
• Near elimination of performance inhibiting carbon deposits, dramatically longer plug life and limited warranty for the lifetime of the first engine the plug is installed in
• Significant potential fuel efficiency improvement: > 4% to 13% (depending on engine class)

• Significant potential fuel efficiency improvement: > 4% to 13% (depending on engine class)
• Drastic potential emissions reduction when used in 2 and 4-stroke engines (after 50 hours): 58% CO emissions reduction, 42% hydrocarbon reduction
• Significant potential power increase: > 6% to 12% (depending on engine class)

• Features an advanced v-groove design for professional lawn and garden equipment which provides easier starting, less fouling, less emissions
• Replaces Autolite part number 255
• Replaces Champion part number cj8

• Replaces NGK part number bpm7a; provides more complete combustion
• Replaces Bosch part number ws5f
• Features an advanced v-groove design for professional lawn and garden equipment which provides easier starting, less fouling, less emissions

• Great time and frustration-saver with cars, motorcycles, boats, chainsaws, lawn mowers & more
• Must-have diagnostic tool for any engine with a spark plug
• Turn the engine over - if ignition is being sent to the cylinder, light in tester glows