E3 Spark Plugs

05-10 300 / Challenger / Charger / Magnum 3.5L V6

E3.58

The E3.58 Automotive Spark Plug is expertly engineered for the vehicle. Featuring E3’s revolutionary DiamondFIRE electrode technology, this spark plug delivers stronger spark energy, enhancing combustion efficiency, engine power, and fuel economy while reducing emissions. The E3.58 plug is equipped with a 14mm thread diameter, 0.750" thread reach (extended to 0.917" with a skirt), and a gasket seat for a secure fit in a wide variety of applications. The three-legged design stabilizes the patented DiamondFIRE side wire, ensuring excellent heat dissipation and maximum turbulence within the combustion chamber—ideal for sustained performance under daily driving conditions or demanding use.

• Enhanced Ignition: Patented DiamondFIRE electrode creates superior spark for better power, efficiency, and emissions control.
• Durable Build: Three-legged electrode design offers improved heat transfer and stability under combustion stress.

Specifications:

• Thread Diameter: 14mm
• Thread Reach: 0.750" (0.917” with skirt)
• Seat Type: Gasket
• Hex Size: 5/8"
• Tip: DiamondFIRE Fixed Gap (Non-Adjustable)
• Type: Resistor
• Longevity: Guaranteed for 100,000 miles or 5 years of use.

E3 Spark Plugs uses its patented DiamondFIRE design to target efficient combustion and consistent ignition performance across automotive and racing applications. For performance builds, a quality spark plug choice can support clean burn characteristics and reliability—especially when tuning for higher cylinder pressures or more demanding driving conditions.