

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.Learn More
The E-3 Diamond Fire Spark Plug is the perfect ignition upgrade for your Jeep Wrangler Rubicon 392. Designed to handle the extreme demands of off-roading, this spark plug delivers exceptional performance and durability.
Specifications:
Specs
Fitment
Jeep Grand Cherokee (WK2)
Jeep Wrangler Unlimited 4-Door (JL)
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.Learn More
The E-3 Diamond Fire Spark Plug is the perfect ignition upgrade for your Jeep Wrangler Rubicon 392. Designed to handle the extreme demands of off-roading, this spark plug delivers exceptional performance and durability.
Specifications: