Autolite 3923 Copper Core Spark Plug, Pack of 1

Autolite 3923 Copper Core Spark Plug, Pack of 1

  • Copper-glass seal bonded insulator, terminal post, and center electrode provide a tight seal that is 100 percent leak-proof
  • Multi-rib insulator reduces danger of “flash-over” to prevent misfires
  • Full copper core electrode improves heat transfer and optimizes plug life
  • Copper core center electrode provides higher thermal conductivity
  • Features high alumina ceramic for high dielectric strength and steel shell for installation robustness

Autolite Copper Core spark plugs deliver quick starts, good fuel economy, and smooth acceleration. The copper-glass seal bonded insulator, terminal post, and center electrode ensure a tight seal that is 100 percent leak-proof, and the full copper core electrode improves heat transfer and optimizes plug life. Copper Core spark plugs feature high alumina ceramic for high dielectric strength, and a steel shell for installation robustness. The multi-rib insulator reduces the danger of “flash-over” t
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$ 1.42


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