Racing Spark Plugs E3's unique DiamondFIRE ground electrode helps to create more turbulence in the cylinder, and facilitate a faster flame growth. The result is more complete combustion, which results in more power and better consistency. E3 Racing Plugs cover a wide variety of Motorsports applications.

I highly recommend the E3 for small engines. I replaced the OEM plug we use on my Honda GX390 with the E3. I do not have a dyno to check hp, but it did make a noticable difference. It does not stall at idle anymore and the power seems to be as stronger, through the entire rpm range.

Headquartered in Point Vedra, Florida, Pyrotek E3, d.b.a. E3 Spark Plugs, was formed to help customers increase power, improve fuel efficiency, and reduce engine emissions that contribute to global warming.

E3. 36 is a 12mm, 0.750″ reach plug with a gasket seat. It is used in a variety of powersport applications, and is often the correct plug for V-Twin motorcycle engines. Most late model Harley Davidson engines require E3.

By simply replacing your existing plugs with premium E3 spark plugs, your ride will have the performance it deserves. Horsepower gains of 4-6% can be expected, depending on engine class size.

The DiamondFIRE ground electrode configuration increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines.

E3 spark plugs have a unique ground electrode that encourages more turbulence in air/fuel mixture. This leads to a more complete burn of the available fuel and the downstream benefits of improvements in power, fuel efficiency, and reduced emissions."

By simply replacing your existing plugs with premium E3 spark plugs, your ride will have the performance it deserves. Horsepower gains of 4-6% can be expected, depending on engine class size.

Tailored for high hp boosted (turbo, nitrous or supercharged) applications, the plug features E3's patented diamond-shaped ground electrode for maximum combustion and edge-to-edge spark, as well as a resistor to keep stock electronics functional. The E3.

It is built to have a very cold heat range, non-resistor, and is used typically in top fuel drag racing engines and similar applications. It crosses against AR5383. E3 racing plugs are fitted with its patented DiamondFIRE ground electrode, which is secured with two legs to the shell.

By simply replacing your existing plugs with premium E3 spark plugs, your ride will have the performance it deserves. Horsepower gains of 4-6% can be expected, depending on engine class size.

5 years How often you change the spark plugs in your vehicle depends upon the type of plugs you use and how you drive the vehicle. Naturally, better plugs and easy driving conditions are optimal. E3 automotive spark plugs offer a 100K mile warranty, or 5 years from the date of purchase.