Denso Long Life Iridium Spark Plug is fast becoming the No. 1 choice for today's high tech engines!
Iridium center electrode tip is only 0.7mm diameter
Produces the hottest, most concentrated spark at least voltage (5,000 less volts to fire than conventional plugs)
Delivers more horsepower, faster, easier starts, less misfires under heavy loads and superior fuel efficiency
100% pre-fired to assure highest quality
Because of its patented technology, the Long Life Iridium Spark Plug outperforms any plug today...including popular platinum. It fires better and incorporates premium features to maximize performance even under the most extreme conditions. Iridium is the most corrosion-resistant metal used in plugs today. It survives the super-high temperatures (up to 4,400° F) associated with high-performance ignitions and special fuel systems (turbo, supercharger, nitrous, etc.). The patented Iridium center electrode features a tapered cut that improves firing performance by reducing quenching. U-groove ground electrode develops a larger and hotter flash front for more complete combustion. Threads are machine-rolled for trouble-free installation and removal. Copper-glass seal bonds center electrode and insulator together for a gas-tight seal for better heat maintenance. Five-rib design prevents flashover and decreases voltage loss. Purified alumina powder insulator provides exceptional dielectric strength and thermal conductivity that can stand up to extreme stress. And each Long Life Iridium Spark Plug features a laser weld producing a 360° seal to help prevent electrode wear. All in all, one of the best spark plugs you can buy!