Learning Center

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  NGK Center Electrode Designs

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

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  NGK Ground Electrode Designs

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

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  Common Spark Plug Problems

  Let's explore three common problems in the firing sequence...

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  How are Spark Plug Threads Measured?

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

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  How is a Spark Plugs Reach Calculated?

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

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  Wasted Spark Ignition Systems

  Does a wasted spark ignition system require special spark plugs?

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  Does a Spark Plugs Hex Size Matter?

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

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  Can I Get NGK IRIWAY, IRITOP, IRIMAC and IRIMAX Series Plugs?

  Essentially, Yes.

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  NGK Spark Plug Metal Types

  What are the various metal types used in NGK spark plugs?

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  Spark Plug Terminal Types

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

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