More Information for AUTOLITE 4093
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AUTOLITE 4093 Specifications
Center Electrode Core MaterialCopper
Center Electrode DesignStandard
Center Electrode Tip MaterialNickel
Electrical Terminal TypeRemovable Nut
Gap Size0.03"
Gap Size0.8mm
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignTapered
Ground Electrode Tip MaterialNickel
Hex Size21MM
Hex Size13/16"
Insulator MaterialCeramic
Resistance1 82
Resistor TypeNo
Seat TypeFlat
Thread Diameter14mm
Tip ConfigurationShort Projection
Copper Non-Resistor; Pre-Set Gap: 0.030"
Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on Autolite copper plugs for performance and value, backed by decades of experience and passion.

Features & Benefits:
  • Guaranteed to deliver quick starts, good fuel economy and smooth acceleration.
  • Copper core center electrode for higher thermal conductivity
  • Specially engineered high nickel alloy center and ground electrode for extended life
  • High alumina ceramic for high dielectric strength
  • Leak proof, heat fused internal seal for durability
  • Multi-rib insulator prevents flash-over
This spark plug is pre-gapped, but may require minor adjustments with a Spark Plug Gap Tool / Feeler Gauge to match your engine's specifications. For proper engine performance, gaps should be within 0.004" of OE-Recommended value.
Which AUTOLITE Spark Plug Is Right For You?

Material / Series Lifespan / Durability Performance / Ignitability Efficiency / Fuel Economy
Copper / Nickel
★★★ ★★
Double Platinum
Double Platinum
★★★★ ★★
Iridium XP
Iridium XP
★★★★★ ★★★★★ ★★
Iridium Ultra
Iridium Ultra
★★★★★★ ★★★★★ ★★

AUTOLITE Warranty Information:
2 years for Copper Spark Plugs; 4 years for Platinum Spark Plugs; 5 years for Double Platinum Spark Plugs; Limited Lifetime years for Iridium XP Spark Plugs; 5 years for Professional Series Wire Sets; 1 year for Glow Plugs
Warranty Details