NGK B5HS Standard Spark Plug (4210)
Original price was: £5.59.£2.57Current price is: £2.57.
NGK B5HS Spark Plug – Stock No. 4210
The NGK B5HS is a short-reach, 14 mm spark plug designed for reliable cold starts and stable ignition. It suits many classic car and motorcycle engines, as well as small two-stroke applications that require a 14 mm gasket-seat plug with 1/2 inch reach and a non-resistor design. Use our vehicle lookup to confirm fitment, or check the Vehicle Fitment tab.
- Consistent spark for easier starting and smoother idle
- Copper core and nickel electrode for steady heat control
- Non-resistor design for a strong, direct spark signal
| Part Number | NGK B5HS |
| NGK Stock Number | 4210 |
| GTIN | 087295142103 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Reach | 12.7 mm (1/2 inch) |
| Seat Type | Flat seat with gasket |
| Hex Size | 20.8 mm (13/16 inch) |
| Heat Range | 5 (NGK scale) |
| Resistor | No |
| Tip Projection | Standard (non-projected) |
| Centre Electrode | Copper core with nickel alloy tip |
| Ground Electrode | Nickel, standard type |
| Factory Gap | 0.7 – 0.8 mm (check and set to spec) |
| Terminal Type | Solid terminal |
| Typical Torque (14 mm gasket seat) | 18 – 25 Nm |
Fitment Guidance
This plug fits many classic and small-capacity engines that use a 14 mm short-reach, gasket-seat, non-resistor plug. It is commonly specified for two-stroke motorcycles, scooters, and small marine engines, plus some classic cars. Always compare the thread, reach, heat range, and resistor type with your original plug. Use our vehicle lookup to confirm fitment, or check the Vehicle Fitment tab.
Important: Always check and set the spark plug gap and follow the correct torque for your engine.
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-4210 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
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DELIVERY INFORMATION
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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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