NGK ILFR6A Laser Iridium Spark Plug – Stock 3588
The NGK ILFR6A is a high-quality iridium spark plug designed for reliable ignition and long service life. Its fine-wire iridium tip needs less voltage to spark, helping cold starts, smooth idle and consistent performance. A platinum pad on the ground electrode reduces wear, so the gap stays stable for longer.
This plug suits petrol engines that use a 14 mm long-reach, gasket-seat design with NGK heat range 6. It is factory set to the correct gap for the intended engines. Always confirm fitment and gap with your vehicle’s specification.
- Stable spark under load for clean combustion and response
- Long-lasting materials help maintain performance over time
- Resistor design for reduced electrical noise and ECU-friendly operation
| Part Number | ILFR6A |
| NGK Stock Number | 3588 |
| Part Category | 686 – Spark Plug |
| GTIN | 087295135884 |
| Centre Electrode | Fine-wire iridium |
| Ground Electrode | Nickel with platinum pad |
| Resistor | Yes |
| Heat Range (NGK) | 6 |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 |
| Reach (Thread Length) | 19 mm |
| Hex Size | 16 mm |
| Seat Type | Flat seat with gasket |
| Design | Projected tip, single ground electrode |
| Factory Gap | Preset – use vehicle spec to confirm |
| Typical Torque (M14 gasket seat) | 18 – 25 Nm |
Fitment guidance
This plug fits engines designed for a 14 mm, long-reach (19 mm), gasket-seat iridium plug with heat range 6. Use the site’s vehicle lookup to confirm compatibility, or check the Vehicle Fitment tab for full details.
Note: Always install on a cool engine. Use a torque wrench and do not overtighten. Adjusting the gap on fine-wire iridium plugs is not recommended unless specified by the vehicle manufacturer.
The price displayed is for a single plug, please add the desired amount to your basket.


