NGK IZFR6B Laser Iridium Spark Plug – Stock No. 3116
This NGK Laser Iridium spark plug delivers reliable ignition, smooth idle, and strong throttle response. The fine iridium tip needs less voltage to spark, which helps cold starts and stable performance. It also resists wear, so it keeps its gap and performance for longer than standard copper plugs.
- Fine iridium centre electrode for consistent ignition under load
- Platinum ground pad for long service life
- Built-in resistor to reduce electrical noise and protect the ECU
- Factory-set gap for easy installation and repeatable results
Technical Specifications
| Part Number | IZFR6B |
| NGK Stock Number | 3116 |
| Category | 686 – Spark Plug |
| GTIN | 087295131169 |
| Plug type | Laser Iridium |
| Heat range | 6 (NGK scale) |
| Resistor | Yes |
| Centre electrode | Iridium fine tip (approx. 0.6 mm) |
| Ground electrode | Nickel with laser-welded platinum pad |
| Factory gap | 0.8 mm (preset) |
| Recommended fuel | Unleaded petrol |
Fitment Guidance
This plug is used across various petrol engines. Use the vehicle lookup on our site or check the Vehicle Fitment tab to confirm it fits your car before ordering.
Note: Always install on a cold engine and tighten to the correct torque specified by your vehicle manufacturer. Do not alter the preset gap unless your service manual states otherwise.
The price displayed is for a single plug, please add the desired amount to your basket.


