Description
NGK SILZKFR8D7G – Laser Iridium Spark Plug (Stock No. 90912)
The NGK SILZKFR8D7G is a premium iridium spark plug designed for modern high-output petrol engines, including turbo and direct-injection setups. It delivers a strong, consistent spark for reliable combustion, smooth running, and long service life.
- Laser-welded iridium centre tip for precise, stable ignition
- Platinum ground pad for long life and consistent gap
- Resistor type to reduce radio interference and protect electronics
- Built for clean cold starts and steady performance under load
Always confirm fitment using the vehicle lookup or the Vehicle Fitment tab before ordering.
Technical specifications
| Part number | SILZKFR8D7G |
| NGK stock number | 90912 |
| GTIN | 87295909126 |
| Category | 686 – Spark Plug |
| Thread size | M12 x 1.25 |
| Thread reach | 26.5 mm |
| Hex size | 14 mm |
| Seat type | Gasket |
| Heat range | 8 (NGK scale) |
| Gap (factory set) | 0.8 mm (approx.) |
| Centre electrode | Fine iridium tip |
| Ground electrode | Nickel with laser-welded platinum pad |
| Resistor | Yes |
| Terminal type | Solid |
| Recommended torque | 23 Nm (aluminium head, M12 gasket seat) |
| Typical service life | Up to 60,000 – 100,000 miles (application dependent) |
Why choose this plug
It helps the engine burn fuel more completely, which can improve throttle response and efficiency. The precious metal tips keep the gap stable over time, so performance stays consistent with minimal maintenance.
Installation notes: Fit to a cold engine. Use the correct socket. Do not over-tighten. Avoid prying on the fine iridium tip. Check gap only if the vehicle maker specifies it, and adjust with care if required. Replace all plugs in a set for best results.
The price displayed is for a single plug, please add the desired amount to your basket.
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