E3 Spark Plugs E3.72 Premium Automotive Spark Plug with DiamondFIRE Technology for Ford Applications, 18mm, 0.430” Reach, Taper Seat, Pack of 1

The E3.72 auto spark plug is a high-performance 18mm, 0.430” reach spark plug designed with a taper seat, primarily for Ford applications from the 1950s to the 1990s. Featuring E3’s patented DiamondFIRE technology, this spark plug utilizes three legs to secure the DiamondFIRE electrode to the shell, ensuring superior heat transfer and promoting increased turbulence within the cylinder for better combustion. The unique DiamondFIRE side wire design has been proven to increase power, improve fuel efficiency, and reduce hydrocarbon emissions during long-term use. The full-size center electrode and specially designed ground electrode provide optimal performance and durability, guaranteed for up to five years or 100,000 miles. With a fixed gap that cannot be adjusted, the spark plug creates an edge-to-edge spark path through its DiamondFIRE open design, which allows the spark zone to be replenished with a fresh fuel/air charge while directly exposing the flame front to the piston head. This revolutionary design leads to increased engine power, improved fuel economy, reduced carbon monoxide and hydrocarbon emissions, and a longer-lasting spark plug. Perfect for lawn and garden applications, this spark plug contributes to smoother acceleration and enhanced engine efficiency.

• 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 delivers a faster, more complete burn, producing up to 4%-12% more power and up to 3%-13% better fuel economy depending on engine class
• 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
• PERFORMANCE BUILT: Yttrium-enhanced alloy and colder heat range help prevent pre-ignition and support performance mods by reducing side-wire temperatures and improving combustion
• LONG-LASTING PERFORMANCE: Includes a 5-year/100,000-mile limited warranty for long-lasting use and dependable performance without frequent replacements