Description
Overview:
The NGK BR8HS Spark Plug (manufacturer stock number 4322) is a quality replacement spark plug for small petrol engines used in garden and construction equipment. It uses a durable ceramic insulator with a nickel-plated steel shell and a robust nickel-alloy electrode to deliver a consistent spark. The BR8HS code denotes a resistor type plug with NGK heat range 8, a short reach of 12.7 mm (1/2 inch), and a standard M14 x 1.25 thread. The 20.8 mm (13/16 inch) hex fits common plug spanners for straightforward installation. Designed to ignite the fuel-air mixture reliably, it supports smooth starting, steady idling, and efficient running. Suitable for a wide range of two-stroke and four-stroke small engines in tools such as chainsaws, brushcutters, strimmers, generators, and compact construction machines.
Key Features:
- Resistor type to reduce electrical interference with ignition and electronics
- NGK heat range 8 for dependable performance in demanding small-engine use
- Short reach 12.7 mm (1/2 inch) and M14 x 1.25 thread for common small engine cylinder heads
- 20.8 mm (13/16 inch) hex for easy fitting with a standard plug socket
- Durable nickel-alloy centre electrode and ground electrode for long service life
- High-grade ceramic insulator for strong dielectric strength and heat dissipation
- Nickel-plated shell to resist corrosion and seizing in the cylinder head
- Consistent ignition for easier cold starts, smoother idle, and cleaner combustion
- Precision made to NGK OEM standards for reliable fit and function
- Direct replacement for NGK BR8HS (stock no. 4322), simple like-for-like swap
- Suitable for many small two-stroke applications commonly found in garden and site equipment
- Install and gap to the engine manufacturer's specification for best results
Typical Applications:
Commonly used in small engines powering chainsaws, brushcutters, strimmers, hedge trimmers, generators, compact tillers, water pumps, and light construction tools such as cut-off saws and plate compactors. Ideal where a short-reach, M14 plug is specified, providing stable ignition under frequent start-stop use and varied load conditions.
Also known as:
Spark plug, ignition plug, engine plug, resistor spark plug, short‐reach spark plug, small engine spark plug, ignition spark, spark igniter.
Alternate Part Numbers:
BR8HS
Product Specifications
| L&S Part No. | BR8HS |
|---|---|
| Manufacturer | NGK |
| OEM No. | 4322 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Key Features | - Resistor type reduces electrical interference - NGK heat range 8 for demanding small-engine use - Short reach 12.7 mm, M14 x 1.25 thread - 20.8 mm hex for easy fitting with standard socket - Durable nickel-alloy electrodes for long service life |
