NGK Laser Platinum spark plugs provide high ignitability and longer service life. Dual platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. The platinum disc welded to backside of ground electrode provides long life, faster starts and quicker acceleration. Laser Platinum spark plugs provide high ignitability and longer service life. Features and Benefits: Laser welded Platinum center electrode tip Platinum disc welded to backside of ground electrode provides long life Trivalent Metal Plating provides superior anti-corrosion and anti-seizing properties Faster starts and quicker acceleration Better fuel economy and lower emissions Best Platinum spark plug available Original Equipment Manufacturer approved design Fleet Maintenance Kit A tune-up kit is a collection of parts that can be used to replace components in a car to keep its engine running smoothly. A tune-up kit typically includes ignition components and filtration components like air, cabin, fuel, and oil filters, as well as potentially belts and hoses.