AC Delco Professional Iridium Spark Plug

    • Ribless insulator that improves the plug-to-boot seal
    • Tapered and columned center wire electrode with a platinum pad that reduces the firing diameter—and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage
    • A platinum center electrode and platinum pad lower the ignition demand voltage and reduce possible flame kernel quenching
    • One-piece integral suppressor seal helps reduce radio frequency interference, meters spark plug energy to prolong electrode life, and seals against compression leakage
    • An expected life of 50,000 miles or better
    • Gapped to the engine's original factory specifications
  • Product Details
AC Delco

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