NGK BR8HS Standard Spark Plug (4322)
Original price was: £8.11.£3.65Current price is: £3.65.
NGK BR8HS Spark Plug – Stock No. 4322
The NGK BR8HS is a cold heat range spark plug designed for reliable ignition under high load and high temperature. It suits many small-displacement and two-stroke applications where a shorter reach plug is required.
It uses a 14 mm thread with a 12.7 mm reach and a gasket seat. The resistor design helps reduce electrical noise, which protects sensitive electronics. A nickel alloy centre electrode offers consistent spark performance and good durability.
- Cold heat range for performance and sustained high RPM use
- Resistor type to reduce interference with electronics
- Short reach (H) for heads that specify 12.7 mm threads
- Proven NGK build quality for stable ignition and easy starting
Technical Specifications
| Part Number | BR8HS |
| NGK Stock Number | 4322 |
| GTIN | 087295143223 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 |
| Reach (Thread Length) | 12.7 mm (1/2 in) |
| Hex Size | 20.8 mm (13/16 in) |
| Seat Type | Flat seat with gasket |
| Heat Range | 8 (cold) |
| Resistor | Yes |
| Centre Electrode | Nickel alloy |
| Ground Electrode | Standard single ground |
| Factory Gap | 0.7 mm (check and set to engine spec) |
Compatibility Guidance
Commonly used in many two-stroke motorcycles, scooters, kart engines, and small marine outboards that specify a 14 mm thread, 12.7 mm reach, gasket seat, and NGK heat range 8. Use our vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
Note: Always match thread, reach, seat type, heat range, and gap to your engine’s specification. Incorrect fitment can cause engine damage.
The price displayed is for a single plug, please add the desired amount to your basket.
| Weight | 0.05 kg |
|---|---|
| Dimensions | 10 × 3 × 3 cm |
| Brand |
NGK-4322 Confirmed Fitment
Please note, this information is a combination of supplier provided compatibility data and our workshop expertise. While every effort has been made to ensure the accuracy of this information Progressive Parts Ltd are not liable for abnormalities or inaccurate data. Customers are wholly responsible for checking fitment for their vehicle. More information is available from our Terms & Conditions
UK Shipping
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DELIVERY INFORMATION
International Shipping
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If your delivery address is outside of the UK, local tax will be removed and you will have to pay import duties and taxes when the shipment reaches your country.
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DELIVERY INFORMATION
Returns
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Stock at Progressive Parts
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0 IN STOCK in orange means everybody we work with is unfortunately out of stock. Stock is not available in the UK. The best course of action is to place an order to create an allocation from the next batch arriving.
OUT OF STOCK in red. This product is unavailable to order, for whatever reason we're unable to obtain stock or there is an issue with supply/lead times.
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