Osculati 47.558.25 – NGK BR6FS Marine Spark Plug
The NGK BR6FS (Osculati 47.558.25) is a marine-grade spark plug designed for reliable operation in harsh environments. It features a built-in resistor to reduce electromagnetic interference, making it suitable for electronic ignition systems. Its short-reach design is optimized for compact outboard motors, providing consistent performance and enhanced cold starting capability.
Key Features:
- Resistor-type spark plug (R) for EMI suppression
- Solid copper core ensures efficient heat transfer
- Corrosion-resistant construction ideal for marine use
- Optimized for quick cold starts and reliable combustion
- OEM fitment for multiple outboard engine brands
Technical Specifications:
| Attribute | Value |
|---|---|
| Model | NGK BR6FS |
| Osculati Code | 47.558.25 |
| Thread Diameter | M14 × 1.25 mm |
| Reach | 12.7 mm |
| Hex Size | 20.8 mm |
| Heat Range | 6 |
| Gap | 0.7 – 0.9 mm |
| Resistor | Yes |
| Electrode Material | Nickel Alloy |
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Suzuki
- Tohatsu
- Selva
- Honda
Cross Reference:
| Brand | Model |
|---|---|
| NGK | BR6FS |
| Champion | RV9YC |
| Champion (alternate) | RV8C |
This spark plug is the preferred choice for marine professionals requiring consistent performance, reduced interference, and resistance to fouling in 2-stroke outboard engines. Its compact design fits a wide range of applications without compromising on performance or durability.
