Premium Racing Spark Plug; Non-Resistor; 5/8 in. Hex Size; 0.460 in. Thread Reach; 14mm Thread Diameter; Taper Seat; DiamondFIRE Tip w/Fixed Gap;

E3.104 is a 14mm, 0.460 in. reach plug with a 5/8 in. hex and a taper seat. It is built to have a cold heat range, non-resistor, and is used a variety of racing applications. E3 racing plugs are fitted with its patented DiamondFIRE ground electrode, which is secured with two legs to the shell. This allows for excellent heat transfer and provides additional stability to the side wire in these high RPM engines. The unique DiamondFIRE ground electrode is proven to increase power, reduce fuel consumption, and improve hydrocarbon emissions in long-term use. The E3 ground electrode and full-size center electrode also provides optimal performance over an extended product life.

• E3 Equipped Engines Can Minimize Venting Of Unburned Fuel
• Provide A Like-New Performance For The Life Of The Plug
• Burn Fuel More Efficiently By Burning Fuel More Completely
• Edge-To-Edge Ground Electrode Out Performs Other Plug Designs
• Patented DiamondFIRE Ground Electrode
• The Most Environmentally-Friendly Plug Available

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