NGK SPMR8A6HDG Spark Plug (Stock No. 92264)
This NGK spark plug is built for reliable ignition under hard use. It uses a fine-wire centre electrode for a strong, clean spark, with a durable ground strap to handle heat in turbo and high-compression engines. It helps cold starts, smooth idle, and consistent performance at higher rpm.
Use it as a quality replacement or as part of a mild performance refresh. It is a colder NGK heat range (8), which can help reduce knock in tuned or heavily loaded engines when the correct plug type is specified by the manufacturer.
Always confirm the exact fitment for your vehicle and engine code using our vehicle lookup or the Vehicle Fitment tab. Check and set the spark plug gap to your OE specification.
- Stable spark under boost and high load
- Precise heat range control for knock resistance
- Resistor design for clean signals and reduced ignition noise
| Manufacturer | NGK |
| Part Category | 686 – Spark Plug |
| Part Number | SPMR8A6HDG |
| NGK Stock Number | 92264 |
| GTIN | 87295922644 |
| Heat Range (NGK) | 8 |
| Resistor | Yes |
| Centre Electrode | Fine-wire precious metal |
| Ground Electrode | High durability nickel alloy |
| Pre-set Gap | Factory set – verify and adjust to OE spec (typical 0.6-0.8 mm) |
| Seat Type | As per OE application – confirm for your engine |
| Thread/Reach/Hex | As per OE application – confirm for your engine |
| Service Interval | Varies by use and tune – inspect regularly |
Why it matters
A good spark plug improves combustion. That means easier starts, smoother running, and dependable power. In tuned engines, the correct colder heat range can help control temperatures at the plug tip, reducing the chance of pre-ignition and knock.
The price displayed is for a single plug, please add the desired amount to your basket.


