Description
NGK B6ES Spark Plug (Stock No. 7310)
The NGK B6ES is a dependable, non-resistor spark plug for many classic and older carburetted engines. It uses a copper core and nickel electrodes for stable spark, easy starting, and smooth idle. It is best suited to standard or mildly tuned engines that do not require a resistor plug.
- Consistent ignition for smoother running and reliable cold starts
- Non-resistor design for strong spark where suppression is not required
- Durable nickel electrodes with copper core for good heat control
Technical specifications
| Manufacturer | NGK |
| Part number | B6ES |
| NGK stock number | 7310 |
| Part category | 686 – Spark Plug |
| GTIN | 87295173107 |
| Plug type | Standard nickel, copper core |
| Resistor | No (use BR6ES if a resistor is required) |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 |
| Reach (thread length) | 19.0 mm |
| Hex size | 20.8 mm (13/16 inch) |
| Seat type | Gasket |
| Heat range | 6 (NGK scale) |
| Projection | Standard, non-projected tip |
| Terminal | Removable terminal nut (threaded stud beneath) |
| Factory gap | Approx. 0.7 mm (set to vehicle spec) |
| Tightening torque | 25-30 Nm for 14 mm gasket seat in aluminium heads |
| Tightening angle (new plug) | 1/2 – 2/3 turn after finger tight |
Fitment guidance
Common on many classic motorcycles and older carburetted engines that specify a 14 mm, long-reach, non-resistor plug. Use the vehicle lookup to confirm exact fitment, or check the Vehicle Fitment tab for full details.
Note: Always match heat range, resistor type, and gap to the vehicle manufacturer’s specification. Adjust gap carefully and do not over-tighten.
The price displayed is for a single plug, please add the desired amount to your basket.
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