HomeIgnition > Hardware, Fasteners and FittingsAutolite AR2593 Spark Plug
Part #: AR2593

Autolite AR2593 Spark Plug

High Performance Racing Non-Resistor Spark Plug
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦High Performance Racing Non-Resistor Spark Plug
🚗Fitment: Alpine, A110
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Overview of Autolite AR2593 Spark Plug

The Autolite AR2593 spark plug is engineered for drivers seeking reliable ignition performance in their vehicles. Designed with a tapered ground electrode tip and copper core center electrode, this spark plug supports efficient combustion and consistent engine operation.

  • Tapered ground electrode tip design for precise spark delivery
  • Copper core center electrode with nickel tip for durability and conductivity
  • Single nickel ground electrode for stable ignition
  • Flat seat type with 14.0 mm thread diameter and 0.750 inch reach
  • Pre-gapped at 0.025 inches (0.60 mm) for optimal spark gap
  • Stud type electrical terminal for secure connection
  • Ceramic insulator material for heat resistance
  • Hex size 13/16 inch (21 mm) for standard installation tools
  • Non-resistor design suitable for high performance applications

High Performance Racing Non-Resistor Spark Plug Line

The Autolite High Performance Racing Non-Resistor Spark Plug line, including the AR2593, is tailored for racing and performance vehicles that require a direct spark without resistor interference. This line focuses on delivering consistent spark energy and durability under demanding conditions, making it suitable for engines where resistor plugs are not recommended.

Technical Details and Benefits

The AR2593 spark plug features a copper core center electrode with a nickel tip, which enhances electrical conductivity and heat dissipation. The tapered ground electrode tip design improves spark exposure to the combustion chamber, promoting efficient ignition. With a flat seat and a 0.750 inch reach, this plug fits applications requiring precise thread engagement and sealing. The ceramic insulator withstands high temperatures, ensuring stable performance during extended operation. The stud-type electrical terminal provides a secure connection to ignition wires, reducing the risk of misfires.

Applications and Problem Solving

  • Compatible with performance and racing vehicles requiring non-resistor spark plugs
  • Addresses issues such as misfires caused by electrode wear or poor spark exposure
  • Helps reduce fouling in high-compression engines
  • Improves throttle response and combustion efficiency
  • Suitable for vehicles needing a 14.0 mm thread diameter and 0.750 inch reach spark plug

Installation Notes and Tips

  • Verify compatibility with your vehicle’s make and model before installation
  • Use a 13/16 inch (21 mm) spark plug socket for proper torque application
  • Check and adjust the spark plug gap to 0.025 inches (0.60 mm) if necessary
  • Apply anti-seize compound on threads to prevent galling during installation
  • Torque to manufacturer specifications to ensure proper sealing and performance

Quality Assurance and Warranty

Autolite spark plugs, including the AR2593, are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Autolite products typically come with a limited warranty against manufacturing defects. For exact warranty information, consult the product documentation or Autolite customer support.

BrandAutolite
Part NumberAR2593
PositionHigh Performance Racing Non-Resistor Spark Plug
Center Electrode Core MaterialCopper
Center Electrode DesignStandard / Regular
Center Electrode Tip MaterialNickel
Electrical Terminal TypeStud
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignTapered
Ground Electrode Tip MaterialNickel
Hex Size13/16"
Hex Size21
Insulator MaterialCeramic
Pre-Gap Size0.025
Pre-Gap Size0.60
Reach0.750
Reach19.5
Resistor TypeNo
Seat TypeFlat
Thread Diameter14.0

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

687825AG071

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.