NGK Laser Iridium Spark Plugs (IZFR5G) feature a copper core and a pure alumina silicate ceramic insulator for superior strength and heat transfer. The ribbed suppressor seal prevents misfire and spark "flash over," while the Trivalent metal plating provides anti-corrosion and anti-seizing properties in marine conditions.
- Fine-wire center electrode for stable spark and efficient combustion
- Trivalent metal plating for easier removal and anti-seizing
- Copper core improves durability and performance
- Always replace all engine plugs at the same time for peak performance
- Produced to meet original equipment manufacturer specifications
