Osculati 47.558.86 – NGK BR6ES Marine Spark Plug
The NGK BR6ES (Osculati 47.558.86) is a versatile resistor spark plug built for a wide range of marine engines. It features a medium heat range for balanced operation, and a resistor to suppress EMI/RFI — essential for protecting modern ignition electronics. With a 19 mm thread reach and durable nickel alloy electrode, this plug offers reliability across various operating temperatures and loads, whether in 2-stroke or 4-stroke configurations.
Key Features:
- Medium heat range (6) suitable for general-purpose marine operation
- Built-in resistor to protect electronic systems from interference
- Long 19 mm thread reach compatible with many cylinder heads
- Standard 0.8 mm factory gap for consistent marine ignition
- Nickel alloy electrodes provide durability and corrosion resistance
Technical Specifications:
| Attribute | Value |
|---|---|
| Model | NGK BR6ES |
| Osculati Code | 47.558.86 |
| Thread Diameter | M14 × 1.25 mm |
| Reach | 19 mm |
| Hex Size | 20.8 mm |
| Heat Range | 6 (medium) |
| Gap | 0.8 mm |
| Electrode Type | Standard |
| Resistor | Yes |
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Suzuki
- Honda
- Tohatsu
- Selva
Cross Reference:
| Brand | Model |
|---|---|
| NGK | BR6ES |
| Champion | – |
The NGK BR6ES is a reliable and widely used spark plug across multiple marine platforms. Its EMI-protected design and robust thermal characteristics make it ideal for standard-duty outboard engines, whether for fishing, leisure, or light commercial use.
