Osculati 47.557.01 – Champion QL86C Spark Plug
The Osculati 47.557.01 is a genuine Champion QL86C spark plug engineered for marine outboard engines. It features an integrated resistor to suppress radio frequency interference (RFI), making it ideal for installations where sensitive electronics or marine communication systems are present. Built with marine-grade materials, it withstands corrosion and offers long-lasting, consistent spark performance.
Main Features:
- Model: Champion QL86C
- Thread Size: 14 mm
- Reach: 9.5 mm (3/8″)
- Hex Size: 21 mm (13/16″)
- Type: Resistor spark plug
- Marine Use: Yes – corrosion-resistant materials
Benefits:
- Reduces radio frequency interference (RFI) with electronic devices
- Provides reliable ignition and cold start performance
- Compatible with various 2-stroke marine outboard engines
- Built for marine environments with high moisture and salt exposure
Technical Specifications Table:
| Parameter | Value |
|---|---|
| Item Code | 47.557.01 |
| Model | Champion QL86C |
| Thread Size | 14 mm |
| Reach | 9.5 mm (3/8″) |
| Hex Size | 21 mm (13/16″) |
| Resistor | Yes |
| Application | Marine outboard engines (2-stroke) |
Perfectly suited for use in outboards equipped with electronic ignition and sensitive marine electronics, the Osculati 47.557.01 – Champion QL86C delivers reliable ignition while protecting onboard systems from RFI. A must-have spark plug for clean engine operation and interference-free communication at sea.








