"The E3.109 premium racing spark plug is a 14mm, 0.708-inch reach plug with a taper seat and projected nose cone, primarily used in racing applications. This high performance spark plug features our patented DiamondFIRE ground electrode, which provides greater power, faster starts, better fuel efficiency, and lower emissions in long-term use. The electrode is secured to the shell with 2 legs to help facilitate heat transfer, and to withstand the intensity of high RPM racing engines. The edge to edge design provides increased efficiency and a faster, more complete burn, which make for optimal performance. The E3.109 spark plug is a replacement for CHAMPION plugs 280, 685, S59YC, and S61YC, as well as Autolite AR93 and AR94, and NGK 7891 and R5724-9.
E3 Spark Plugs racing spark plugs offer near-perfect combustion with their patented electrode design that allows for better growth. The DiamondFire design ensures that your vehicle runs at optimal performance, with a dramatic increase in power over an extended spark plug life.
Key Features
- DiamondFIRE ground electrode maximizes horsepower
- Provides a more complete burn of available fuel and improves fuel efficiency
- Two-leg design offers excellent heat dissipation"