About E3 Spark Plugs and Performance Products
E3 Spark Plugs with patented DiamondFIRE technology, developed and validated by researchers from leading engineering universities, improves combustion efficiency for maximum performance.  As one of the leading spark plug companies in the United States, E3 manufactures a complete line of spark plugs for automotive, small engine, powersports and racing application.  In 2016, E3 expanded the company’s product line to include distributors, spark plug wires, coils and 02 sensors under the company’s DiamondFIRE brand. The DiamondFIRE line of ignition products firmly entrenches E3’s commitment to the automotive high performance and racing industry.

Our company focuses on improving the ignition of fuel inside the combustion chamber of your car, truck or small engine.  We realized that the key to an industry breakthrough would not come from exotic metals such as platinum or iridium, but rather from a completely NEW electrode design. Starting at our own laboratories, we then tested our designs at two leading engineering universities, assisted by top professors in the field of combustion and engine dynamics.  From that research, we decided to ditch the antiquated “J-wire” electrode and engineer our products to be fuel-efficient spark plugs that would ignite and completely burn the fuel/air mixture in the cylinder.  After years of research and testing, we are proud to offer our customers the advanced DiamondFire design in our complete line of E3 spark plugs.