NGK Iridium IX Spark Plugs 3521 4/Pack NGK CR9EIX

NGK Iridium IX Spark Plugs 3521 4/Pack NGK CR9EIX

• Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.


• Fine-tipped iridium-center electrode ensures high durability and consistently stable spark


• Iridium alloy with an extremely high melting point


• Tapered ground electrode maximizes fuel burn


• Outstanding acceleration, high fuel efficiency and durability


• Ultimate design, technology and performance


• Sold in standard pack only