The NGK SPARK PLUGS Laser Iridium Spark Plug is engineered for dependable ignition performance, efficient combustion, and long service life in compatible automotive applications. This SILMAR8A9S model uses a fine-wire iridium center electrode to support consistent spark delivery and reliable engine starting. The NGK manufacturer part number is 90992, and the vendor part number is also 90992.
Designed for precise fitment, this spark plug should be matched to the vehicle’s year, make, model, engine, and original equipment specifications before installation. It is suitable for replacement applications requiring the NGK SILMAR8A9S plug. Always verify the recommended spark plug type, heat range, reach, and gap for the specific engine to ensure proper performance and compatibility.
Feature: Laser iridium construction supports reliable ignition and extended electrode life.
Feature: Trivalent metal plating provides strong corrosion resistance and anti-seizing properties.
Feature: Corrugated ribs help reduce the risk of electrical flashover.
Feature: Pure alumina silicate ceramic insulator provides high strength and efficient heat transfer.
Feature: Copper core helps transfer heat away from the firing end.
Feature: Triple seals help prevent gas and combustion leakage.
Manufactured by NGK SPARK PLUGS, this spark plug is identified by model SILMAR8A9S and part number 90992. Confirm application details before purchase or installation, and follow the vehicle manufacturer’s service procedures for torque and spark plug replacement.
Features:
- Laser iridium construction supports reliable ignition and extended electrode life
- Trivalent metal plating provides corrosion resistance and anti-seizing protection
- Corrugated ribs help prevent electrical flashover
- Pure alumina silicate ceramic insulator provides strength and heat transfer
- Copper core assists with heat removal
- Triple seals help prevent leakage