Autolite XP Iridium Spark Plug XP3922
  • Thumbnail  Autolite XP Iridium Spark Plug XP3922
  • Thumbnail  Autolite XP Iridium Spark Plug XP3922

Autolite XP Iridium Spark Plug XP3922




Part #XP3922
Ground Electrode DesignTapered
Seat StyleGasket
Metal TypeIridium
Gap - Factory Preset1.0 mm = 0.040 in
Electrical Terminal TypeRemovable Nut
Reach (in)0
Center Electrode DesignFine Wire
Insulator TypeProjected
Center Electrode Core MaterialCopper
Thread Size14mm X 1.25
Drive Size5/8 in
Ground Electrode ConfigurationSingle
Center Electrode Tip MaterialNickel
Ground Electrode Core MaterialNickel
Insulator MaterialCeramic
Resistance (Ω)4000
Ground Electrode Tip MaterialPlatinum
Package Quantity1


Our best spark plug! Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6 mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double iridium-enhanced alloy technology center electrode for improved durability and wear resistance. Warrantied for 7 years.

  • checkmark0.6 mm finewire design improves ignitability
  • checkmarkPatented V-trimmed platinum sidewire technology resists wear
  • checkmarkDesigned for better overall durability with virtually no gap erosion
  • checkmarkOE equivalent design is engineered for every engine