Availability

- In Stock Items. Ships Today. (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Universal
- Yes (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- No (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Spark Plug Thread Size
- 10mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 14mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Spark Plug Reach (in.)
- 0.750 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 0.984 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Spark Plug Reach (mm)
- 19.05mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 24.99mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Manufacturer Heat Range
- 6 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 8 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Spark Plug Seat Style
- Gasket (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Tapered (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filter Options
- Stock Replacement (2)
- PowerSports (1)

NGK Iridium IX Spark Plugs

4.86 out of 5 stars 251 Customer Reviews

NGK Iridium IX spark plugs feature an ultra-fine center electrode that's designed just thick enough to ensure the maximum durability and life of the spark plugs—and just thin enough to create an accurate and consistent spark. They represent the ultimate evolution of spark plug technology and performance. Iridium is the hardest metal used in spark plugs today—six times harder than platinum. This allowed NGK engineers to reduce the voltage requirement for a spark. Iridium IX plugs are available in more than a hundred configurations for universal and vehicle-specific applications.

Showing In Stock Items. Show All 2 Items.