.74 Spark Plug

The E3.74 is a 14mm automotive spark plug featuring a 1.000-inch thread reach and a taper seat design. It is equipped with a DiamondFIRE fixed gap, making it a durable and high-performance replacement part for a wide range of late-model vehicles, with a particular emphasis on Ford applications. Engineered with E3's patented DiamondFIRE technology, this spark plug utilizes a unique three-leg design that secures the electrode. This construction is intended to improve heat transfer and create more turbulence within the combustion chamber, potentially leading to increased power, reduced fuel consumption, and lower hydrocarbon emissions during long-term use. The combination of the unique ground electrode and full-size center electrode is designed to deliver optimal performance and comes with a guaranteed lifespan of five years or 100,000 miles. The E3.74 spark plug is specified as a resistor type and has a 5/8-inch hex size for installation. Its fixed gap is not adjustable, simplifying the installation process.