NGK PFR7H-10 Laser Platinum Spark Plug (Stock No. 3978)
The NGK PFR7H-10 is a high-quality Laser Platinum spark plug designed for stable ignition under hard use. It uses a fine-wire platinum centre with a platinum-tipped ground electrode for long life and consistent performance. The NGK heat range 7 is a colder option, helping reduce knock in tuned or high-load engines.
It suits many petrol engines that specify an NGK heat range 7 plug with a 1.0 mm gap. Use the vehicle lookup or check the Vehicle Fitment tab to confirm it matches your engine.
| Part Number | PFR7H-10 |
| NGK Stock Number | 3978 |
| GTIN | 087295139783 |
| Category | 686 – Spark Plug |
| Plug Type | Laser Platinum (double platinum) |
| Heat Range | 7 (colder vs 6) |
| Resistor | Yes |
| Factory Gap | 1.0 mm |
Why choose this plug
- Strong spark with lower voltage demand for reliable starts and smooth idle.
- Superior knock resistance in tuned or turbo engines thanks to colder heat range.
- Stable performance over a long service life due to platinum centre and ground tips.
Note: Always set the gap and torque to your vehicle manufacturer’s spec. Do not force the fine-wire centre electrode when checking the gap.
The price displayed is for a single plug, please add the desired amount to your basket.
Additional Information
| Weight | 0.05 kg |
|---|---|
| Dimensions | 10 × 3 × 3 cm |
| Brand |


