E3 Spark Plugs: Chrysler 300 / Dodge Challenger / Charger 6.4L 392 2011 - 2024

E3 Spark Plugs

11-24 Chrysler 300 /  Dodge Challenger / Charger 6.4L 392

E3.74

The E3.74 Automotive Spark Plug is a high-performance replacement plug designed for vehicle. Engineered with E3’s patented DiamondFIRE technology, the plug promotes a faster, more complete combustion cycle—boosting horsepower, increasing fuel efficiency, and reducing emissions over the long term.

This spark plug features a 14mm thread diameter, 1.000" reach, and taper seat to ensure a precise fit for your vehicle engine. Its triple-legged ground electrode secures the DiamondFIRE tip, enhancing heat dissipation and generating greater turbulence in the combustion chamber for maximum efficiency. The fixed-gap design eliminates the need for adjustments and delivers consistent spark performance across thousands of miles. Backed by a 5-year or 100,000-mile warranty, the E3.74 offers durability and peak engine performance for drivers who demand more from their vehicle.

• Patented DiamondFIRE Technology:
  Optimizes combustion for better throttle response, horsepower, and fuel economy
• Three-Leg Ground Electrode:
  Stabilizes the electrode for enhanced heat transfer and increased combustion turbulence
• Fixed DiamondFIRE Spark Gap:
  Factory-set for consistent ignition and long-term reliability—no gapping required
• Extended Service Life:
  Built to perform for 100,000 miles or 5 years under typical driving conditions
• Precision Fit:
  14mm thread diameter, 1.000" reach, 5/8" hex, taper seat design
• Lower Emissions:
  Reduces unburned hydrocarbons for cleaner, more efficient engine performance