E3 E3.38 DiamondFIRE Powersport Spark Plug 10mm Gasket Seat

The E3.38 is a 10mm, 0.750" reach spark plug with a gasket seat, designed for a variety of powersport applications, especially import motorcycles. This plug is commonly used in Honda, Suzuki, Yamaha, and other high RPM engines.

Key Features:

• Patented DiamondFIRE ground electrode secured to the shell with two legs to facilitate heat transfer and withstand intense vibration of powersport engine applications
• Unique DiamondFIRE side wire proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use
• Full-size center electrode provides optimal performance over an extended product life
• 10mm thread diameter with 1.0mm thread pitch and 5/8" (16mm) hex size
• Pre-gapped at .031" (0.8mm) with fixed gap that cannot be adjusted
• Resistor-type plug with nickel center and ground electrodes

This spark plug offers long-lasting reliability with a lifespan of up to 100,000 miles. Direct replacement for Champion G57C and G59C, and NGK CR7E, CR8E, and CR9E spark plugs.

Torque Specifications: 8-12 lb-ft for both cast iron and aluminum heads