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DENSO Iridium Spark Plugs use the highest quality materials, and are produced in our state of the art manufacturing facilities.
Below is a cross-section of the highlights of the Iridium plug. Click on any of the yellow circles for a detailed explanation.
|Insulator||Copper-Cored Center Electrode||Tapered Cut|
|Five-Rib Design||U-Groove Ground Electrode||360° Laser Welding|
|Copper-Glass Seal||Patented Iridium Center Electrode||100% Pre-Fired|