NGK BPR6FS Spark Plug – Stock No. 2623
The NGK BPR6FS is a resistor spark plug with a projected tip. It offers reliable ignition, stable idle, and good fouling resistance. It is a solid choice for everyday use and light performance tuning where a medium heat range plug is specified.
It uses a short-reach 14 mm thread with a gasket seat. The projected insulator helps place the spark in a better position for cleaner combustion.
- Improves cold starting and throttle response compared to worn plugs
- Resistor design reduces radio interference and protects sensitive electronics
Always check and set the gap and torque to your engine manufacturer’s spec.
| Part number | BPR6FS |
| NGK stock number | 2623 |
| GTIN | 087295126233 |
| Category | 686 – Spark Plug |
| Thread diameter | 14 mm |
| Thread reach | 11.2 mm (short reach) |
| Seat type | Flat seat – gasket |
| Hex size | 20.8 mm (13/16 in) |
| Heat range | 6 (medium) |
| Resistor | Yes |
| Insulator type | Projected tip |
| Centre electrode | Nickel alloy |
| Ground electrode | Standard, copper core |
| Factory gap | Typically 0.6 – 0.8 mm (set to spec) |
| Terminal | Solid nut |
Broad compatibility
– Suits many petrol engines that specify a 14 mm short-reach, gasket-seat, projected resistor plug, including some classic cars, motorcycles, marine, and small engines. Use the vehicle lookup on our site or check the Vehicle Fitment tab to confirm.
The price displayed is for a single plug, please add the desired amount to your basket.

