Description
NGK B10EG Spark Plug – NGK Stock 3630
The NGK B10EG is a cold-range, non-resistor spark plug designed for high-load, high-revving engines that demand reliable ignition under heat. It suits many performance two-stroke applications where a B10 heat rating is specified.
Its 14 mm thread and 19 mm reach make it a common fit on bikes and karts that use long-reach, gasket-seat plugs. The cold heat range helps prevent pre-ignition in tuned engines. Use it where your manual or ECU calibration calls for a B10 plug. If you need radio-noise suppression or road-going electronics protection, choose a resistor type instead.
- Strong spark stability at high RPM and high cylinder temps
- Cold heat range (10) for tuned or hard-worked engines
- Non-resistor design for maximum spark energy
Technical specifications
| Part number | B10EG |
| NGK stock number | 3630 |
| GTIN | 087295136300 |
| Category | 686 – Spark Plug |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 mm |
| Thread reach | 19.0 mm |
| Hex size | 20.8 mm (13/16 in) |
| Seat type | Gasket |
| Heat range | 10 (cold) |
| Resistor | No |
| Projected tip | No |
| Centre electrode | Nickel alloy |
| Ground electrode | Standard single |
| Factory gap | 0.5 – 0.6 mm (set to engine spec) |
| Terminal type | Solid |
Fitment guidance
This plug is commonly used in performance two-stroke motorcycles and kart engines that specify NGK B10EG. Always confirm using the site’s vehicle lookup or check the Vehicle Fitment tab, and follow your engine’s recommended heat range and gap.
Important: A heat range that is too cold can foul in light use. Choose the heat range specified by your engine builder or manufacturer. Adjust the gap only to the value specified for your engine or ignition system.
The price displayed is for a single plug, please add the desired amount to your basket.
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