E3 Spark Plugs E3.66 Premium Automotive Spark Plug w/DiamondFIRE Technology (Pack of 1)

Key features

• Automotive spark plug that fits a variety of domestic applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions
• E3's patented DiamondFIRE edge-to-edge electrode provides maximum performance with increased efficiency, and a faster more complete burn
• Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for a reduction in side wire temperature for less pre-ignition
• Includes one (1) E3.66 spark plug with a limited lifetime warranty
• Primarily used in a wide variety of automotive and truck applications