Description
Overview:
The Genuine NGK BR8ECS Spark Plug (Stock No. 3972) is a resistor-type spark plug for reliable ignition in small petrol engines used in construction and garden machinery. Built with durable, corrosion-resistant materials and a robust insulator, it delivers consistent spark performance for easy starting and smooth running. It features a 20.8mm (13/16") hex for standard socket access, a 19mm (3/4") reach, and an M14 x 1.25 thread, making it suitable for many generators, cut-off saws, mowers, and handheld two-stroke tools. As a Genuine NGK part, it is engineered for long service life and stable heat control. Supplied individually, it's a straightforward like-for-like replacement for maintenance or repair and is suitable for both professional workshops and DIY users.
Key Features:
- Genuine NGK part for trusted quality and consistency (Brand: NGK; Stock No: 3972)
- Resistor type to reduce electrical interference with ignition and electronics
- Hex size: 20.8mm (13/16") for easy access with common spark plug sockets
- Reach: 19mm (3/4") for correct seating in many small engines
- Thread: M14 x 1.25 (major diameter 14mm; approx. 9/16") for secure fitment
- Durable construction for long service life in demanding environments
- Stable ignition for easier cold starts and smoother running
- Suitable for a wide range of construction and garden machinery
- Sold individually for precise replacement without excess stock
- Easy to fit; always check the engine manual for gap and heat range confirmation
Typical Applications:
Commonly used in petrol-powered equipment such as generators, plate compactors, cut-off/concrete saws, pressure washers, lawn mowers, brushcutters, strimmers, leaf blowers, and small utility engines. Ideal for routine servicing or replacing a fouled or worn plug to restore dependable starting and efficient combustion in professional and domestic machines.
Also known as:
Spark plug, ignition plug, spark igniter, engine plug, resistor spark plug, M14 x 1.25 plug, small engine plug. These terms are often used interchangeably when referring to the same ignition component for petrol engines.
Alternate Part Numbers:
98079-58819, 9807958819
Product Specifications
| L&S Part No. | BR8ECS |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | NGK |
| OEM No. | 3972 |
| Unit of Sale | 1 |
| Fits Brands | NGK |


