NGK BR10ET Spark Plug – Triple Ground, Resistor, 14 mm Thread
A high quality NGK spark plug designed for hard-running engines. The BR10ET uses three ground electrodes to keep the spark consistent and help resist fouling, especially in high-revving two-strokes. The cold NGK 10 heat rating helps control temperatures under sustained load. An internal resistor cuts electrical noise that can affect the ECU and ignition.
- Triple ground design for stable spark and longer service life
- Cold heat range 10 for high RPM and performance use
Important: Always match the heat range and gap to your engine spec. A heat range 10 is very cold and may foul with light use.
Technical specifications
| Part number | BR10ET |
| NGK stock number | 7480 |
| GTIN | 87295174807 |
| Category | 686 – Spark Plug |
| Thread diameter | 14.0 mm |
| Thread pitch | 1.25 mm |
| Reach (thread length) | 19 mm |
| Hex size | 20.8 mm |
| Seat type | Flat seat with gasket |
| Resistor | Yes |
| Heat range | 10 (cold) |
| Ground electrodes | 3 |
| Centre electrode | Nickel alloy |
| Factory gap | 0.7 – 0.8 mm |
| Terminal | Solid terminal |
Fitment guidance
Common in performance two-stroke motorcycles, scooters, karts and some marine engines that specify NGK BR10ET. Use the vehicle lookup to confirm, or check the Vehicle Fitment tab for full details.
Installation notes
– Clean, dry threads only. Fit the supplied gasket.
– Tighten to 18 – 22 Nm for a 14 mm gasketed plug, or follow the vehicle manual.
– Re-check gap only if the engine manufacturer specifies a different setting.
The price displayed is for a single plug, please add the desired amount to your basket.


