NGK IZFR5G Laser Iridium Spark Plug – Stock No. 5887
The NGK IZFR5G is a Laser Iridium spark plug designed for reliable ignition, clean combustion, and long service life. It uses a fine iridium centre electrode for a strong, stable spark, with a platinum pad on the ground electrode to resist wear. This helps the engine start easily, idle smoothly, and maintain performance over more miles.
It is a direct replacement where IZFR5G is specified. Use the vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
| Part number | IZFR5G |
| NGK stock number | 5887 |
| GTIN | 087295158876 |
| Category | 686 – Spark Plug |
| Technology | Laser Iridium centre electrode with platinum ground pad |
| Resistor | Yes |
| Thread size | M14 x 1.25 |
| Reach (thread length) | 19 mm |
| Hex size | 16 mm |
| Seat type | Flat seat with gasket |
| Tip style | Projected |
| NGK heat range | 5 |
| Factory set gap | 1.1 mm (check to your vehicle spec) |
| Centre electrode diameter | Approx. 0.6 mm iridium tip |
| Terminal | Solid terminal |
- Quicker starts and smoother idle due to fine iridium tip.
- Stronger spark under load for consistent performance.
- Longer service life vs. standard nickel plugs.
Note: Iridium plugs are pre-gapped. Avoid forcing the electrodes. Always follow the vehicle manufacturer’s gap and torque settings.
The price displayed is for a single plug, please add the desired amount to your basket.


