Autolite AR3910X High Performance Racing Non-Resistor Spark Plug, Pack of 1



  • MAXIMUM PERFORMANCE: racing spark plugs are used by many professional car drivers. Our high performance spark plugs deliver the action-pack performance that professional is looking for to maximum performance
  • EFFICIENCY: This automotive spark plug has anti-corrosive nickel-plating that prevents rusting better than black oxide, allowing the plug to maintain its durability and efficiency
  • IMPROVED DURABILITY: Autolite Racing Spark Plugs contains Yttrium-enhanced alloy to enable up to 8% reduction inside wire temperature for improved durability and less pre-ignition. Designed with colder heat ranges
  • CONSTRUCTION: This automotive spark plug features a cut background electrode for improved ignitability of flame kernel and better heat transfer. Coated in an anti-corrosive nickel plating to prevent rusting
  • AUTOLITE ADVANTAGE: Autolite Spark Plugs has been producing spark plugs since 1936, making it one of the most trusted and reliable products for your OE spark plugs needs.


  • Autolite Racing Spark Plugs are used by many professional race car drivers. These spark plugs contain an Yttrium-Enhanced Alloy, which enables up to 8 percent reduction in side wire temperature for improved durability and less pre-ignition. Autolite racing plugs are available in colder heat ranges than most plug manufacturers to support modified engines and feature a cut background electrode for improved ignitibility and faster flame kernel growth. They are also nickel plated for a long-lasting, corrosion-resistant finish. As a of spark plugs, the Autolite product has the right ignition products for your application, regardless of make or model, import or domestic.