E3.103 Racing Spark Plug

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E3.103 Racing Spark Plug straight on view
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ITEM # : E3.103
Racing spark plug that is used in a variety of race engine applications.




E3.103 is a 14mm, 0.750” reach plug with a 5/8” hex and a gasket seat. It is built to have a cold heat range, non-resistor, and is used a variety of racing applications. E3.103 is a heat range hotter than E3.102. 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.

        Autolite AR3934, AR3935
        Champion 297,298, 691, 785, C61C, C61CX, C63C, C63CX
        NGK 4091, 4554, R5671A-7, R5671A-8

Part Number: E3.103

Resistor: Non-Resistor

Hex Size: 5/8"

Thread Reach: 0.750"

Thread Diameter: 14mm

Seat: Gasket

Tip/Gap: DiamondFIRE Fixed Gap Cannot Be Adjusted


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