Copper Core Electrode (when required) Provides broader heat range to resist pre-ignition.
Laser weld 360˚ continuous laser welded iridium center electrode featuring ultra fine wire design.
Tapered Ground Electrode with laser-welded, iridium-platinum alloy inlay promotes durability and longest life.
Ribbed Insulator design prevents misfires due to flash-over.
Nickel-plated Shell with rolled threads provides complete anti-seize and corrosion protection.