NGK

  • NGK TR6 Spark Plug for mildly modified 2007-2014 GT500 5.4L/5.8L (NGK-4177)

    NGK TR6 Spark Plugs

    NGK TR6 Spark Plugs Sold individually. For a general rule of thumb, we normally recommend NGK TR6 spark plugs gapped .030 for GT500's running less than 15psi of boost, but always consult your tuner when deciding what plug and gap to run. Fits: 2007...

    $3.00
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  • NGK TR6IX Iridium Spark Plug (NGK-3689)

    NGK TR6IX Spark Plug

    NGK TR6IX Iridium Spark Plugs Sold individually. For a general rule of thumb, we normally recommend NGK TR6IX spark plugs gapped .030 for GT500's running less than 15psi boost, but always consult your tuner when deciding what plug and gap to run...

    $7.49
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  • NGK TR7IX Spark Plug for moderately modified 2007-2014 GT500  (NGK-3690)

    NGK TR7IX Iridium Spark Plugs

    NGK TR7IX Iridium Spark Plugs Sold individually. For a general rule of thumb, we normally recommend NGK TR7IX spark plugs gapped .028 for GT500's running 16-19 psi boost, but always consult your tuner when deciding what plug and gap to run...

    $7.49
    Add to Cart
  • NGK TR8IX Iridium Spark Plug for high boost 2007-2014 GT500 (NGK-3691)

    NGK TR8IX Iridium Spark Plugs

    NGK TR8IX Iridium Spark Plugs Sold individually. For a general rule of thumb, we normally recommend NGK TR8IX spark plugs gapped .022 for GT500's running 20+ psi boost, but always consult your tuner when deciding what plug and gap to run...

    $7.49
    Add to Cart