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Searching for your parts in the DENSO part catalog is easy. Simply select the type of part you are looking for along with the year/make/model of your U.S. or Canadian vehicle. For vehicles in Latin America, please go here.


        Search for cross reference part numbers for other manufacturers of the parts you're looking for.

        Cross Reference information is provided as a guide only. Please refer to the "Applications" lookup tabs for more detail. Materials and designs will differ among brands, so plugs are not exactly alike. Always check with your OE service manual for proper installation and settings.

        Iridium Power®


        • Tapered cut, U-Groove ground electrode
        • 0.4mm iridium Tip
        • Patented 360-degree laser welding assembly process

        Required ignition voltage reduced

        Unsurpassed center electrode durability

        Available for many performance and power sports applications, including Corvette, Viper, and Harley-Davidson

        Improved spark ignition for maximum combustion, even with lean air-fuel mixtures

        0.4mm Iridium Center Electrode Delivers Maximum Spark Energy

        Iridium Power® best demonstrates its performance improvement during acceleration. The world’s smallest center electrode and specially shaped ground electrode deliver maximum spark energy while withstanding temperatures greater than 4000º F. These features combine to achieve higher ignitability and require lower spark voltage than ever before. As a result, acceleration improves in comparison with normal plugs.

        Ignitability That’s a Cut Above

        To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to increase, which has the opposite effect. Iridium Power uses DENSO’s patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage.

        1. 360° Laser Weld
        2. 0.4mm Iridium Tip
        3. U-Groove Ground Electrode

        Knowledge Base Information Available