Metals Make the Difference

Learn more about the advantages of the different metals used in Autolite spark plugs

Autolite® Iridium XP Enhanced Alloy Technology Spark Plugs

  • Iridium-enhanced center electrode
  • Proprietary platinum sidewire technology
  • 0.6-mm finewire design for improved ignitability
  • Nickel-plated shell
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Autolite® Double Platinum Spark Plugs

  • Full platinum tips
  • High nickel alloy side electrode 
  • Necked-down center electrode
  • Full copper core center electrode
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Autolite® Platinum Spark Plugs

  • High nickel alloy side electrode maintains precise gap
  • Full platinum tip center electrode assures virtually no gap erosion
  • Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration
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Autolite® Copper Spark Plugs

  • Copper-glass seal bonds insulator, terminal post and center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
  • Multi-rib insulator reduces danger of "flash-over"
  • One-piece terminal post adds strength
  • Resistor reduces radio frequency interference (RFI) and electrode erosion
  • Cold-formed steel shell precision rolled threads
  • Full copper core electrode provides better performance in all conditions
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Your Autolite Resource Center

Find everything you need to know…

Looking to learn more about your Autolite® spark plugs?  Check out the links below to search for the exact part for your car, watch How To videos to learn how to change your own spark plugs and find out everything you need to know about why Autolite is America’s Best Selling Spark Plug!