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E3 Spark Plugs

Welcome to E3 Spark Plugs online... home to the advanced DiamondFIRE spark plug technology. If you are a returning E3 visitor, let us know how you like the changes to our website. If you are a new visitor, welcome to the website that's dedicated to bringing you the latest news about increased performance, reduced engine emissions and a better burn for your automotive, powersports, and small engine spark plug. Our mission at E3 has always been reflected in our devotion to the advancements in ignition technology. Now, the new E3 website is an inclusive portal for all spark plug applications as well as a technical center for information about our fuel-efficient line of premium performance OEM replacement plugs. By focusing on improving the ignition cycles of the air-fuel mixture inside your engine's combustion chamber, our products are engineered to be environmentally friendly with a more complete and cleaner burn.

Also, new to the E3 website are enhancements to the E3 Tech Support Center. We've improved your access to the latest technical information about selection and installation. You can check for the latest tips in our Tech Bulletins or Tech Videos sections. You can use our onsite media player to check out the latest E3 Racing & Team Lucas Oil news posted in the E3 Video Center. Moreover, don't forget to stay informed by visiting our News center for the most current blogs, events and press releases.



I have a 2003 Mazda Protege 5 that is far from stock anymore. I am running a set of E3's and am getting 28 - 30 mpg depending on my right foot. I was getting 26 - 28 before. I also have a 1992 lifted Dodge Dakota 4X4 with a 318V8. I am also running a set of E3's. Can't complain with that choice either. My other truck is a 1950 Chevy with 355 HP GM Performance ZZ4 under the hood. I plan on dropping another 8 E3's into my rat rod when it's time for new plugs. I'm very happy with the plugs.


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