NGK DCPR9EIX Iridium IX Spark Plug – Stock No. 2316
The NGK DCPR9EIX is a high-performance iridium spark plug designed for strong ignition, stable combustion, and long service life. It uses a fine-wire iridium centre electrode to fire easily under load and at high RPM. This helps cold starts, throttle response, and consistency, especially in tuned or hard-driven engines.
The NGK heat range 9 is a colder plug. This helps control combustion temperatures in performance use. It also resists fouling during repeated short trips.
Use this plug where DCPR9E-type plugs are specified. It is commonly used in high-performance motorcycle and powersports engines. Always confirm fitment with the vehicle lookup or the Vehicle Fitment tab.
Why choose this plug
- Fine-wire iridium tip for a strong, stable spark
- Improved ignition under high load and high RPM
- Colder heat range for performance and track use where specified
- Resistor design to reduce electrical interference with ECUs and sensors
| Part Number | DCPR9EIX |
| NGK Stock Number | 2316 |
| Category | 686 – Spark Plug |
| GTIN | 087295123164 |
| Technology | Iridium IX fine-wire centre electrode |
| Heat Range | 9 (NGK scale – colder) |
| Resistor | Yes |
| Thread Diameter | 12 mm |
| Thread Pitch | 1.25 |
| Thread Reach | 19 mm |
| Seat Type | Flat seat with gasket |
| Hex Size | 16 mm |
| Terminal Type | Solid terminal |
| Factory Gap | 0.8 mm (check and set to your vehicle spec) |
| Centre Electrode | 0.6 mm iridium tip |
| Ground Electrode | Nickel alloy with tapered cut |
Important: Always use the gap and torque specified by your vehicle manufacturer. Do not pry against the iridium tip when adjusting the gap. Use the site’s vehicle lookup to confirm fitment.
The price displayed is for a single plug, please add the desired amount to your basket.


