Learning Center

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  How Do I Find a Colder or Hotter Plug?

  Each spark plug has a unique heat range. How can you find a plug that is a hotter or colder heat range?...

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  Spark Plug Anatomy

  Not all spark plugs are created equal...

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  What is a Resistor Spark Plug?

  Resistor spark plugs prevent interference with electronic equipment...

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  Can I Use Platinum, Iridium or Ruthenium Plugs with Nitrous Injection?

  Iridium - yes. Platinum - no. Ruthenium - maybe...

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  What is a Spark Plugs Heat Range?

  The term heat range refers to the speed with which a plug can transfer heat from the combustion chamber to the engine head...

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  I Have a Modified Engine - Do I Need a Colder Spark Plug?

  Possibly...

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  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...

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  How Long Do Autolite Iridium Plugs Last?

  Autolite Iridium XP bring the features of OEM iridium long life plugs to the market...

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  Autolite Center Electrode Designs

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

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  Autolite Ground Electrode Designs

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

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