NGK ILTR6G8G Laser Iridium Spark Plug – Stock No. 96621
The NGK ILTR6G8G is a high-quality iridium spark plug designed for clean ignition, stable idle, and long life. It uses a fine-wire iridium centre electrode for a strong spark with less voltage, plus a platinum pad on the ground electrode to slow wear. This helps cold starts, throttle response, and efficiency in both standard and tuned petrol engines.
Use it as a like-for-like replacement or as a reliability upgrade where specified. Always install a full matched set.
- Fine-wire iridium tip for strong, consistent ignition
- Platinum ground pad for longer service life
- Preset 0.8 mm gap for OE-style performance
- Resistor type to reduce electrical interference with modern ECUs
| Part number | ILTR6G8G |
|---|---|
| NGK stock number | 96621 |
| Category | 686 – Spark Plug |
| GTIN | 87295966211 |
| Type | Laser Iridium (iridium centre, platinum ground pad) |
| Heat range | 6 (NGK scale) |
| Gap | 0.8 mm (factory set) |
| Resistor | Yes |
| Configuration | Single ground electrode, projected tip |
| Fuel type | Petrol (including direct-injection) |
| Typical service life | Long-life OE grade (check vehicle schedule) |
Fitment guidance
This plug is specified for selected modern petrol engines. It is often used where an OE iridium plug with a 0.8 mm preset gap is required. Use the site’s vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
Important: Do not alter the factory gap unless the vehicle manufacturer or a trusted tuner specifies it. Always torque to the vehicle specification on a cold engine.
The price displayed is for a single plug, please add the desired amount to your basket.


