E3 Spark Plugs E3.56 Autolite Copper Core Spark Plug, Leak-Proof Seal, Enhanced Heat Transfer, Durable Steel Shell, Prevents Misfires, Pack of 1

E3 Spark Plugs E3.56 Autolite Copper Core Spark Plug, Leak-Proof Seal, Enhanced Heat Transfer, Durable Steel Shell, Prevents Misfires, Pack of 1

• DIAMONDFIRE TECHNOLOGY: Features a patented ground electrode secured with three legs to enhance heat transfer, increase turbulence in the cylinder, and improve combustion efficiency for smoother engine performance
• MORE POWER AND FUEL EFFICIENCY: E3 Spark Plugs deliver up to 12% more power and up to 13% better fuel economy in small engines, and up mid-single digits on automotive applications, helping to enhance overall engine performance and reduce fuel consumption across a wide range of vehicles
• 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
• ENHANCED DURABILITY AND FIT: Built with a Yttrium-enhanced alloy that lowers side wire temperature by up to 8% to prevent pre-ignition, with precise specs including 14mm thread diameter, 0.750-inch thread reach, gasket seat, and 5/8-inch hex size
• 5-YEAR WARRANTY: Engineered for long-lasting performance in a variety of late-model and import vehicles; includes a 5-year or 100,000-mile limited warranty for added confidence and reliability