Product Summary

Universal Fit, Tapered Spark Plug Seat Style

  • Spark plugs feature a cut back ground electrode
  • Includes a large ground electrode for better heat transfer
  • Core is made from copper and the tip from nickel alloy
  • They have a 0.46" reach and features a tapered seat
  • Has a common 14 mm thread pitch and will fit a 5/8" hex socket

Key Specs

MFG. Part #AR135

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Autolite AR135 Details

Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range Hotter.

  • Standard tip
  • 14 mm plug
  • .460" reach
  • 5/8" hex
  • Tapered seat
  • Non-resistor
  • Vendor Number: AR135

Note: Please use the Vendor Number to reference the PDF chart links listed.

Item Details

Vendor Part Number AR135



CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Autolite AR135 Specifications

MFG. Part #AR135
Speedway Motors Catalog Part #373-135
Spark Plug Seat StyleTapered
Spark Plug Reach0.46"
Thread Pitch14mm
Insulator TypeNon-projected
Spark Plug Heat Range5
Core MaterialCopper
Tip MaterialNickel Alloy
Overall Length14.00"
Wrench Size5/8"
Sold in QuantityEach
GTIN Code00009100017208