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    Autolite High Performance Racing Non-Resistor Spark Plug

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    Warranty Information
    • Product Details

      Part No. AR3910X

      Warranty Details (2 YR REPLACEMENT IF DEFECTIVE)

      A surface gap plug provides exactly what its name describes - a gap at the surface of the combustion chamber. The gap is an annular configuration. The center electrode and insulator tip operate extremely cold (no heat rating) and are therefore, nearly impervious to pre-ignition. However fouling deposits are always present and cannot burn away.

      Product Features:

      • Power tip X does not use side ground electrode
      • No need for indexing of spark plug
      • No gap setting to adjust or monitor
      • Power tip X reduces the volume of combustion chamber for increased Compression Ratio

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