Autolite Copper Spark Plug 85
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Autolite Copper Spark Plug 85




Part #85
Ground Electrode DesignTapered
Seat StyleGasket
Metal TypeCopper
Gap - Factory Preset0.8 mm = 0.032 in
Electrical Terminal TypeRemovable Nut
Reach (in)0.372
Center Electrode DesignStandard / Regular
Insulator TypeProjected
Center Electrode Core MaterialCopper
Thread Size14 mm x 1.25
Drive Size13/16 in
Ground Electrode ConfigurationSingle
Center Electrode Tip MaterialNickel
Ground Electrode Core MaterialNickel Alloy
Insulator MaterialCeramic
Resistance (Ω)4000
Ground Electrode Tip MaterialNickel
Package Quantity1


Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration, Autolite Copper Core spark plugs are designed to meet or exceed ors design requirements. Consider upgrading to Autolite platinum, double platinum or iridium XP plugs for improved engine performance. Copper Core plugs are the industry standard.

  • checkmarkCopper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
  • checkmarkMulti-rib insulator reduces danger of "flash-over
  • checkmarkOne-piece terminal post adds strength
  • checkmarkResistor reduces radio frequency interference (RFI) and electrode erosion
  • checkmarkCold-formed steel shell precision rolled threads
  • checkmarkFull Copper Core electrode provides better performance in all conditions