Description
Overview:
The Genuine NGK BPM6F Spark Plug (Manufacturer Part Number 5950) is an OEM ignition component for small petrol engines used in garden and light construction equipment. Built with a durable nickel-alloy ground/centre electrode, a copper core for efficient heat transfer, and a high-strength ceramic insulator, it provides a clean, reliable spark for smooth running and easier starting. Suited to two-stroke and four-stroke applications such as trimmers, brushcutters, chainsaws, and compact engines, it is a direct fit in many popular machines, including the Al-Ko 250 Trimmer and Homelite ST155. With an M14 x 1.25 thread and 13/16" (20.8 mm) hex, it installs easily with standard tools. Sold individually. Genuine Part from NGK for dependable performance and long service life.
Key Features:
- Genuine NGK OEM quality for consistent ignition and durability
- Gap: 0.7 mm (approx 0.028") for precise spark control
- Thread size: M14 x 1.25; diameter 14 mm (approx 9/16"), pitch 1.25 mm (approx 0.049")
- Hex size: 20.8 mm (13/16") for straightforward fitting and removal
- Reach: 7.8 mm (approx 5/16") suitable for shallow-thread cylinder heads in small engines
- Robust ceramic insulator resists fouling, heat, and vibration
- Nickel-alloy electrode and copper core promote stable combustion and easier cold starts
- Compatible with a wide range of trimmers, brushcutters, chainsaws, and compact engines
- Sold individually for precise maintenance scheduling and replacements
- Genuine Part identification helps ensure correct specification and performance
Typical Applications:
Ideal for small air‐cooled engines in garden and landscaping tools, including string trimmers, brushcutters, chainsaws, and compact blowers. Also suitable for similar-spec small engines in light-duty construction equipment such as augers or cut-off saws where an M14 x 1.25 plug with a short reach is specified. Supports reliable starting, smooth idling, and consistent power under regular use.
Also known as:
Often referred to as an ignition plug, engine plug, or spark igniter. Some users may describe it as a small-engine plug or mower plug when used across compatible handheld equipment and compact engines.
Fits Models:
Al-Ko 250 Trimmer, Homelite ST155, Homelite ST175, Homelite ST185, Homelite ST285, Homelite ST385, Homelite 245 Super SL, Jonsered 450, Jonsered 525, Jonsered 490, Jonsered 590, Jonsered 520, Ryobi RSV1100A, Sabre BLV25, Sabre S25, Sabre S25C, Sabre B25, Shindaiwa YW210, Shindaiwa YW220
Alternate Part Numbers:
5950
Product Specifications
| L&S Part No. | BPM6F |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | NGK |
| OEM No. | 5950 |
| Unit of Sale | 1 |
| Machine Type | Trimmers, Chainsaws |
| Fits Brands | NGK |
| Key Features | - M14 x 1.25 thread for easy installation - Nickel-alloy electrode ensures stable combustion - Compatible with trimmers, brushcutters, chainsaws - 20.8 mm hex size for straightforward fitting - 0.7 mm gap for precise spark control |
