Description
NGK Iridium IX spark plugs deliver superior ignition performance and longevity by leveraging a smaller, more efficient electrode design that reduces voltage demands on your ignition system. The ultra-fine iridium center electrode burns hotter and cleaner than conventional plugs, translating to better combustion efficiency, improved throttle response, and extended service intervals. Whether you’re running a high-revving race engine or a daily driver, these plugs provide the reliability and consistency that serious enthusiasts and professionals depend on.
- Iridium center electrode
- 25% smaller than platinum
- 1/4 size of nickel
- Reduced voltage requirement
- Extended ignition system life
- Enhanced anti-corrosion plating
- Part number: CR5HIX 7120
- OEM-quality construction
- Improved combustion efficiency
- Longer service intervals


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