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Learning Center

What are Copper Core Spark Plugs?

Almost all spark plugs use a copper cored center electrode to conduct the electricity, jump the gap, and promote heat dissipation... Read More

NGK Center Electrode Designs

Center electrodes come in a variety of shapes and sizes... Read More

NGK Ground Electrode Designs

Ground electrodes come in a variety of shapes and sizes... Read More

What is a Resistor Spark Plug?

Resistor spark plugs prevent interference with electronic equipment... Read More

Spark Plug Terminal Types

Spark plugs are manufactured with three different terminal configurations... Read More

ISO vs. JIS Spark Plug Heights

What are ISO and JIS plug heights? Read More

Tapered vs. Gasket Seat

Spark plug seats are not interchangeable... Read More

Does a Spark Plugs Hex Size Matter?

A plugs hex size determines the socket required for installation... Read More

How is a Spark Plugs Reach Calculated?

A spark plugs reach is calculated by the length of the threads... Read More

How are Spark Plug Threads Measured?

A spark plugs threads are comprised of three dimensions... Read More

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