Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith
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Products

With over 10 billion spark plugs produced, you can count on Autolite to provide your vehicle with the right spark everytime. Founded in 1935, Autolite has over 75 years of experience producing the industry leader in spark plug technology. When it comes to your car, you can trust Autolite.

Featured Products
Autolite AR132 14mm Spark Plug-5/8 Hex Taper Seat .46-Slightly Colder
Autolite AR132 14mm Spark Plug-5/8 Hex Taper Seat .46-Slightly Colder
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Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range Slightly Colder. 

  • Standard tip
  • 14 mm plug
  • .460" reach
  • 5/8" hex
  • Tapered seat
  • Non-resistor
  • Vendor Number: AR132

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

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

Autolite AR133 14mm Racing Spark Plug-5/8 Hex, Tapered, .46 Reach, Med
Autolite AR133 14mm Racing Spark Plug-5/8 Hex, Tapered, .46 Reach, Med
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Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range Medium. 

  • Standard tip
  • 14 mm plug
  • .460" reach
  • 5/8" hex
  • Tapered seat
  • Non-resistor
  • Vendor Number: AR133

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

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

Autolite AR135 14mm Spark Plug, 5/8 Hex, Tapered, .460 Inch Reach, Hot
Autolite AR135 14mm Spark Plug, 5/8 Hex, Tapered, .460 Inch Reach, Hot
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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.

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

Autolite AR3933 14mm Racing Spark Plug 5/8 Hex Gasket 3/4 Reach, Hot
Autolite AR3933 14mm Racing Spark Plug 5/8 Hex Gasket 3/4 Reach, Hot
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Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range needed with Standard tip or Power tip: Hotter. 

  • 14 mm plug
  • .75" reach
  • 5/8" hex
  • Gasket seat
  • Non-resistor
  • Vendor Number: AR3933

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

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

 

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