The result of independent research and testing suggests that using E3 car spark plugs in your vehicle can increase horsepower when compared to more conventional spark plugs. Our patented Edge-to-Edge electrode outperformed other plug designs, including some premium spark plugs offered by the major manufacturers. Plus, E3 automotive spark plugs will continue to offer that "like-new" performance over the long haul and help to extend the life of your car's engine.
