Hi-Performance Racing Spark Plug
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Autolite Hi-Performance Racing Spark Plug

Part No. AR13 Warranty Details  

Fit of this part varies by vehicle & equipment specs Type of Fit

Actual racing spark plug used by many professional race car drivers. Provides a new Yttrium enhanced alloy allowing up to 8% reduction in sidewire temperature*, anti-corrosive nickel plating and cut back ground electrode for improved ignitability.
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Electrode Tip Material:Non Resistor
Reach:.460 in
Resistor:Non Resistor
Seat Type:Tapered
Thread Diameter:14 mm
Tip Configuration:Power
Wrench Diameter:5/8 in

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1 Question | 2 Answers
Displaying question 1
  • Q:

    what gap do i use on my sparkplugs
    Asked on 5/29/2010 by Anonymous

    2 answers



      You need to set the gap that that manufacturer asks for.

      Answered on 6/1/2010 by Kevin from AAP
    • A:

      According to Autolite Tech Support, they come pregapped at .025 and should not be opened any wider, to do so can damage the plug electrode.

      Answered on 9/16/2012 by SeaFox236 from Midlothian, VA
Displaying question 1

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