Description
Overview:
The BR5HS Spark Plug is a Genuine NGK replacement plug designed for reliable ignition in small petrol engines. Built with a durable steel shell and a high-strength ceramic insulator, it delivers a clean, consistent spark to ignite the air-fuel mixture and support smooth starting and running. This is a resistor-type plug for reduced electrical interference, with NGK Manufacturer Part Number (MPN) 3722 for easy identification. Commonly used in compact construction tools and garden machinery, it suits many two-stroke and four-stroke engines. Typical fitments include chainsaws, brushcutters, lawn mowers, generators, pumps and light compaction or cutting equipment. Key dimensions for installation: 14 mm thread (M14 x 1.25), 12.7 mm (1/2") reach, and 20.8 mm (13/16") hex size, making it straightforward to service with standard tools.
Key Features:
- Genuine NGK part for consistent performance and long service life
- MPN 3722 for accurate replacement and easy cross-checking
- Resistor (R) design helps reduce radio frequency interference and protects ignition systems
- Short-reach design: 12.7 mm (1/2") for shallow cylinder heads and compact engines
- 14 mm thread (M14 x 1.25) and 20.8 mm (13/16") hex for simple fitting and removal
- Robust ceramic insulator and metal shell to withstand heat, vibration and fouling
- Stable ignition for easier cold starts, smoother idle and cleaner combustion
- Suitable for many small two-stroke and four-stroke engines used in garden and site tools
Typical Applications:
Used across small engine equipment such as chainsaws, brushcutters/strimmers, hedge trimmers, lawn mowers, generators, water pumps, compactors/whackers and cut-off saws. Ideal for routine servicing to restore reliable starting, steady running and efficient fuel burn in both garden machinery and light construction tools.
Also known as:
Resistor plug, small engine plug, ignition plug, engine plug, spark igniter. Often referenced by its code BR5HS or NGK 3722 in parts lists and service manuals.
Product Specifications
| L&S Part No. | BR5HS |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | NGK |
| OEM No. | 3722 |
| Unit of Sale | 1 |
| Machine Type | Engines |
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