NGK [Nippon Spark Plug] IRIDIUM IX DR9EIX [Set of 4]

• <Heat value>9

●New excitement born from quick response!A high-performance spark plug that brings out the power of your car! [NO.1] Improved startability and acceleration: Add a premium to your car.The moment you step on the accelerator, the machine roars.This quick response brings new joy to driving!! [NO.2] Increased fuel efficiency: Outstanding fuel efficiency.Kind to your wallet and the environment.Iridium plugs have better ignitability than regular plugs and achieve outstanding fuel efficiency!! [NO.3] High performance Iridium IX plug sparks a new realm of engine!: IRIDIUM IX is an iridium plug that can be replaced with the standard heat value installed (new car installed) plug.Combustion spreads faster than regular plugs, and a thermo-edge is provided at the tip of the insulator to prevent plug fouling.A high value-added plug that enables improved ignition performance, acceleration performance, and fuel efficiency.