Description
NGK B7HS Spark Plug – Stock No. 5110
The NGK B7HS is a reliable, nickel-alloy spark plug for engines needing a short-reach M14 plug without a resistor. It delivers a consistent spark for easy starting, smooth idle and clean running. The NGK 7 heat range suits many classic two-stroke and small-capacity engines that run at sustained higher temperatures.
Always match thread size, reach, seat type, heat range and resistor type to your engine. Set the gap to the vehicle maker’s spec.
Key benefits
- Stable ignition for better starting and throttle response
- Durable nickel electrode for long service life
- Short-reach, gasket-seat design for many classic applications
- Non-resistor type for systems that specify no suppression
| Specification | Detail |
|---|---|
| Part Number | B7HS |
| NGK Stock Number | 5110 |
| Part Category | 686 – Spark Plug |
| GTIN | 087295151105 |
| Thread size | M14 x 1.25 |
| Reach (thread length) | 12.7 mm |
| Seat type | Flat seat – gasket |
| Hex size | 20.8 mm (13/16 in) |
| Heat range | 7 (NGK scale) |
| Resistor | No (non-resistor) |
| Centre electrode | Nickel alloy |
| Ground electrode | Standard, single |
| Projection | Non-projected |
| Terminal type | Solid terminal nut (SAE) |
| Factory gap | 0.7 mm (adjust to OE spec) |
| Typical torque | 25-30 Nm (14 mm, gasket seat) |
| Installation (new plug) | Finger tight, then 1/2 – 2/3 turn |
Compatibility guidance
Common on many classic air-cooled motorcycles and scooters, and small two-stroke marine/outboard engines that take an M14 short-reach, gasket-seat, non-resistor plug. Use our vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
The price displayed is for a single plug, please add the desired amount to your basket.
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