E3 Spark Plugs E3.33 Premium Powersport Spark Plug E3's Diamond FIRE edge to edge electrode provides maximum performance with increased efficiency, and a faster more complete burn Quicker Starts - The patented Edge to Edge design concentrates spark energy resulting in easy starts in all conditions Energy - Increases both two and four cycle engine power up to 12% over conventional spark plugs Efficiency - Fuel consumption reduced up to 13% in small engines Ecology - E3's advanced spark technology produces cleaner burning combustion; toxic emissions in long term use reduced up to 58%