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Autolite AR3933 Racing Spark Plugs

Autolite AR3933 Racing Spark Plugs
  • Name: SPARK PLUG
  • Part Number: AUTLAR3933
  • Brand: Autolite
  • $3.56
  • List Price: $3.58
  • You Save: 1%

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Autolite AR3933 High Performance Racing Non-Resistor Spark Plugs

Guaranteed to deliver quick starts, good fuel economy and smooth acceleration. Autolite Copper Core plugs are your industry standard.


  • Copper-glass seal bonds insulator, terminal post 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.

Thread Size: 14mm X 1.25

Reach: 3/4"

Hex Size: 5/8" (16mm)

Seat: Gasket

Tip Configuration: Short Projection

Resistor: Non Resistor

Metallurgy: Copper

Loose Terminal: No

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