The E3 Spark Plug is proven to give dramatic results—increased horsepower, extended engine life, and improved fuel economy. E3 has a patented DiamondFIRE technology 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. E3 has vastly improved that design.  

E3 Spark Plugs increase engine power up to 12%. Thanks in part to the DiamondFIRE design, E3 Spark Plugs provide your engine with a more thorough, complete combustion, which results in better fuel economy and reduces 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. All E3 Spark Plugs are warranted against fouling, wear, and defects in materials and workmanship for 5 years or 100,000 miles.

• Patented DiamondFIRE Technology
• Increases real engine power up to 12%
• Provides a more complete and thorough combustion
• Fuel consumption reduced up to 13%
• Harmful toxic emissions reduced up to 58%
• Reduced carbon deposits and material degradation promotes engine life
• Covered by a 5-year/100,000-mile manufacturer warranty against fouling, wear, and defects
• Sold individually

Get the most from your vehicle with the best spark plugs on the market. E3 is the proven leader in spark plug power and performance. 

Note: Spark plugs are sold individually.