Set (4pcs) NGK Laser Iridium Spark Plugs Stock 6544 Nickel Core Tip Taper Cut 0.036in IMR9D-9H;

NGK Laser Iridium Spark Plugs are the Latest OE Spark Plug Design. They Feature a Laser Welded 0.8mm Iridium Center Electrode along with Laser Welded Platinum on the Ground Electrode Providing the Strongest Ignitability and the Longest Life Possible