E-3 E3.74 Diamond Fire Spark Plug for 12-21 Jeep Grand Cherokee WK2 SRT & 22-24 Wrangler JL Rubicon 392 with 6.4L

Patented DiamondFIRE Technology: Experience superior ignition with this advanced design, promoting increased horsepower, improved fuel economy, and lower emissions.

Durable Construction: Built to withstand extreme engine conditions, the E3.74 features a high-temperature alloy electrode for extended lifespan.

Wide Application: Designed for a broad range of late-model vehicles, especially Hemi engines, ensuring optimal fit and performance.

Optimized Heat Transfer: The three-leg ground electrode design enhances heat dissipation, preventing pre-ignition and detonation.

Guaranteed Performance: Backed by a 5-year or 100,000-mile warranty for your confidence.