DENSO’s Iridium saver spark plugs are a range of high efficiency, long-life spark plugs for industrial gas engines that use iridium technology to increase plug life and performance; reducing maintenance costs achieved by the extended plug life in high pressure, lean-burn engines.

Using its patented Iridium alloy, DENSO was able to shrink the center electrode to 0.7mm, dramatically improving ignitability and longevity.

The DENSO difference:

• High dielectric ceramics
• Newly developed ceramics with finer grain, molded-in higher pressure and higher density prevents electrical breakdown of insulator.
• Highly reliable monolithic resistor
• Guaranteed high reliability for withstanding high combustion pressures by incorporating a stress resistant monolithic resistor that adheres to the resistor glass in the high temperature furnace.
• In addition, this eliminates interference to electronic equipment from high energy coil noise.
• Special Nickel plating with better corrosive resistance
• Better corrosive resistance for condensed acid water.
• Cross grove design (M18 mm Plug)
• Four small electrodes create a cross groove which improves sparking performance and suppresses dispersion in voltage value, for an outstanding decrease in required voltage.
• Unique Iridium Alloy
• Iridium alloy – developed and patented by DENSO – offers a high welding point which dramatically improves wear resistance compared to other Iridium plugs.
• 360 degree Laser welding
• So reliable the electrode resists wear even under the most extreme engine conditions.