NGK BR8ES Standard Spark Plug (5422)
Original price was: £7.80.£3.51Current price is: £3.51.
NGK BR8ES Spark Plug – Stock No. 5422
The NGK BR8ES is a reliable, resistor-type spark plug for many performance-minded two-stroke and small-capacity engines. It delivers a clean, consistent spark and resists fouling. Ideal where dependable cold starting and stable combustion are important.
It uses a nickel alloy centre with a copper core for good heat transfer. The heat range 8 is on the colder side, helping control temperatures in hard-worked or high-revving engines. The built-in resistor cuts electrical noise that can affect the ECU or radios.
- Strong ignition under load with stable idle and clean throttle response
- Resists fouling in two-stroke use and frequent stop-start running
- Resistor design reduces electrical interference in sensitive systems
Technical specifications
| Part number | BR8ES |
| NGK stock number | 5422 |
| GTIN | 087295154229 |
| Category | 686 – Spark Plug |
| Thread diameter | 14 mm |
| Thread reach (length) | 19 mm |
| Hex size | 20.8 mm (13/16 in) |
| Seat type | Flat seat with gasket |
| Heat range | 8 (NGK scale – colder) |
| Resistor | Yes (approx. 5 k?) |
| Centre electrode | Nickel alloy with copper core |
| Ground electrode | Standard single |
| Projected tip | No |
| Factory set gap | 0.7 mm (check and adjust to OEM spec) |
| Terminal type | Solid terminal |
Compatibility and fitment
Common in many two-stroke motorcycles, scooters, ATVs, marine outboards, and small engines that specify NGK BR8ES. Always confirm fitment with the vehicle lookup on our site or check the Vehicle Fitment tab for full details.
Installation notes: Fit to a cold engine. Use a new gasket. Tighten to manufacturer torque, or as a guide for a new plug with gasket, turn 1/2 to 2/3 of a turn after the gasket seats. Set the gap to the vehicle maker’s specification.
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-5422 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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For emissions components this encompasses noise, emissions and balanced back pressure, which have a strong influence on maintaining engine performance (power), and fuel efficiency. Type approval ensures that an aftermarket component will reach, or exceed the performance standard of the corresponding OE part.
Type-approval then, is a certain guarantee that an end user will receive a product of OE equivalent performance attributes.
Products on the Progressive Parts website that meet this approval will be clearly marked or labelled EC or ECE approved.