NGK BR7HS Standard Spark Plug (4122)
Original price was: £8.11.£3.65Current price is: £3.65.
NGK BR7HS Spark Plug – Stock No. 4122
The NGK BR7HS is a reliable copper-core spark plug for everyday use and light performance tuning. It offers clean ignition, stable idle, and dependable cold starting. The resistor design helps reduce electrical noise that can affect radios and ECU signals.
- Strong, consistent spark for smooth running
- Resistor type to cut interference
- Short-reach design for many small-capacity and two-stroke applications
Broadly used across many two-stroke motorcycles, scooters, personal watercraft, and small marine outboards that specify a 14 mm short-reach gasket plug. Use the vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
| Part number | BR7HS |
| NGK stock number | 4122 |
| GTIN | 087295141229 |
| Category | 686 – Spark Plug |
| Thread diameter | 14 mm |
| Thread reach | 12.7 mm (1/2 inch) |
| Hex size | 20.8 mm (13/16 inch) |
| Seat type | Flat seat with gasket |
| Heat range | 7 (NGK scale) |
| Resistor | Yes |
| Tip style | Standard, non-projected |
| Centre electrode | Copper core, nickel alloy |
| Ground electrode | Standard single ground |
| Factory gap | 0.7 mm (adjust as specified by the engine manufacturer) |
| Terminal type | Solid terminal |
Important: Always match heat range and gap to your engine spec. If re-gapping, handle the ground strap carefully to avoid damage. Tighten to NGK guidance for 14 mm gasket plugs (typically 18-22 Nm in aluminium heads) or follow the vehicle maker’s torque spec.
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-4122 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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DELIVERY INFORMATION
Returns
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Stock at Progressive Parts
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What do our stock statuses mean?
1+ IN STOCK in green stock is readily available in one of our warehouses for express delivery (at the time of viewing).
LOW STOCK in green means we're running low! 1 or 2 left on the shelf so act fast. Over evenings, weekends and bank holidays this stock can move quickly so please bear this in mind.
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MADE TO ORDER in blue means we've partnered with a supplier which primarily makes their products to order. It's not on our shelf, but your order goes into production immediately.
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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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.