The E3 Spark Plug is proven to give dramatic results: increased horsepower, extended engine life, and improved fuel economy. The patented DiamondFIRE technology of E3 has been proven to be the most powerful way to ignite the air/fuel mixture for the most efficient combustion and longest performance life. Until now, spark plug technology hasn't changed much from the original 1903 patent for the flat "J-Wire" electrode that you see on most plugs.

This spark plug increases engine power up to 12%, thanks in part to the DiamondFIRE design. E3 Spark Plugs provide your engine with a more thorough, complete combustion, resulting in better fuel economy as well. Reducing fuel consumption up to 13%, this is an investment that will pay for itself. Because of the cleaner, more thorough combustion, harmful toxic emissions resulting from unused and unburned fuel are reduced by as much 58%. E3 Spark Plugs reduce carbon deposits and material degradation inside your engine, extending engine life and promoting like-new performance.

• Patented DiamondFIRE technology
• Increase in real engine power up to 12%
• More complete and thorough combustion
• Fuel consumption reduced up to 13%
• Harmful toxic emissions reduced by up to 58%
• 5-Year/100,000-mile warranty against fouling, wear, and defects

Increase engine power and reduce harmful toxic emissions. All E3 Spark Plugs are warranted against fouling, wear, and defects in materials and workmanship for 5 years or 100,000 miles.

Note: Sold individually.