Denso GK3-7 Iridium Saver DDI

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SKU: DENSO GK3-7 Iridium Saver DDI (6128)

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Current Stock: 34


The Denso GK3-7 Iridium Saver DDI spark plug is designed specifically for the Cummins ISL-G compressed natural gas (CNG) engine. These unique spark plugs include two side ground electrodes which help block the very rapid gas flow at the spark plug, allowing the proper spark to be generated.

We've combined the Denso GK3-7 Iridium Saver Spark Plug and a specially designed rubber boot to create an aftermarket kit that replaces Cummins part # 4955850. The spark plug and boot kit can be ordered in this web store.


For California customers: Prop 65 WARNING: This product may have been manufactured with or uses components that can expose you to chemicals which are known to the State of California to cause cancer. For more information go to


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