You can depend on NGK for quality and reliability Features laser welded Iridium center electrode tip Faster starts and quicker acceleration Better fuel economy and lower emissions Platinum disc welded to backside of ground electrode provides long life NGK Laser Iridium Spark Plug is manufactured to provide superior ignitability. It is constructed from durable material that is corrosion and abrasion resistant. This spark plug features smallest tip diameter. The iridium, platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. It ensures longevity and can be easily installed.