NGK Laser Iridium High Ignitability Spark Plugs - Box of 4 (SILMAR9F9)

NGK Laser Iridium High Ignitability spark plugs (SILMAR9F9) are engineered for original equipment applications that demand the highest levels of durability and ignition efficiency. These plugs feature an iridium-tipped center electrode combined with a raised platinum pad or fine wire tip on the ground electrode. This precious metal combination ensures consistent spark performance and even wear, particularly in modern distributorless ignition systems (DIS).

• Maximum Durability: Iridium center electrode is six times harder than platinum for long-term wear resistance.
• Dual Precious Metals: Platinum ground electrode surface prevents erosion and improves ignitability.
• Advanced Construction: 98% pure copper core facilitates superior heat dissipation to prevent overheating and pre-ignition.
• Superior Insulation: Pure alumina silicate ceramic insulator provides high-strength dielectric properties and efficient heat transfer.
• Anti-Corrosion Finish: Trivalent metal plating offers excellent anti-seizing and anti-corrosion protection without the need for anti-seize during installation.
• Leak-Proof Seal: Triple gasket seals prevent combustion gas leakage for consistent cylinder pressure.

These plugs are the recommended replacement for vehicles originally equipped with iridium alloy spark plugs, ensuring your engine maintains factory-spec performance and fuel economy.