NGK (5068) IFR8H-11 Laser Iridium Spark Plug, Pack of 1 Model: IFR8H-11 Car/Vehicle Accessories/Parts Laser welded Iridium center electrode tip. Platinum disc welded to backside of ground electrode provides long life. Trivalent Metal Plating for superior anti-corrosion and anti-seizing. Faster starts and quicker acceleration. Better fuel economy and lower emissions.