NGK TR7IX Iridium IX Spark Plug – Stock No. 96090
The NGK TR7IX is a high quality iridium spark plug designed for reliable ignition under tough conditions. It delivers a strong, stable spark, helps cold starts, and resists fouling better than standard copper plugs. The iridium centre tip wears slowly, so performance stays consistent for longer.
Heat range 7 (NGK scale) suits many tuned or hard-driven petrol engines that run hotter than stock. It can also be a sensible step for track use where extra thermal control is needed. Always match heat range and gap to your engine’s specification.
Use this plug where your engine calls for a 14 mm thread, 19 mm reach and NGK heat range 7. For exact fitment, please use the site’s vehicle lookup or check the Vehicle Fitment tab.
| Part number | TR7IX |
| NGK stock number | 96090 |
| GTIN | 87295960905 |
| Category | 686 – Spark Plug |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 |
| Reach (thread length) | 19 mm |
| Hex size | 16 mm |
| Seat type | Gasket |
| Resistor | Yes |
| Heat range | 7 (NGK scale) |
| Centre electrode | Iridium, approx. 0.6 mm tip |
| Ground electrode | Nickel alloy, tapered cut |
| Factory gap | 0.8 mm (check and set to your vehicle spec) |
- Sharper spark for cleaner combustion and smoother idle.
- Better resistance to fouling in stop-start or high boost use.
- Durable iridium tip for long service life and stable performance.
Important: Check and set the gap to your manufacturer’s spec. Do not sand or file the iridium tip. Use the correct torque to avoid damage.
The price displayed is for a single plug, please add the desired amount to your basket.


