E3 Spark Plugs E3.66 Premium Automotive Spark Plug with DiamondFIRE Technology for Hemi Engines, 14mm, 1.000" Reach, Gasket Seat, Pack of 1

E3 Spark Plugs E3.66 Premium Automotive Spark Plug with DiamondFIRE Technology for Hemi Engines, 14mm, 1.000" Reach, Gasket Seat, Pack of 1

• FOR DOMESTIC APPLICATIONS: Designed to fit a wide range of domestic vehicles, this spark plug enhances power, improves fuel economy, and reduces harmful hydrocarbon emissions, making it ideal for various engine types and models
• DIAMONDFIRE TECHNOLOGY: Patented side-wire electrode design ensures faster, more complete combustion, optimizing engine efficiency, improving power output, and reducing harmful emissions
• LOWER EMISSIONS: The more complete burn helps to reduce emissions, minimize carbon buildup, promote cleaner combustion, and support compliance with modern environmental and emissions standards
• ENGINEERED FOR PERFORMANCE: Colder heat range and Yttrium-enhanced alloy help reduce side-wire temperatures, prevent pre-ignition, and support performance modifications across a variety of engine types
• 5-YEAR WARRANTY: Built for long-lasting performance and reliability across various vehicles and imports; includes a 5-year or 100,000-mile limited warranty for added peace of mind