Osculati 47.558.03 – NGK B8HS Spark Plug
The Osculati 47.558.03 features the NGK B8HS spark plug, a trusted non-resistor type used across a wide range of 2-stroke marine outboards. Built with a copper core for efficient thermal conductivity and a standard electrode design, this plug is ideal for engines without RFI-sensitive electronics. It corresponds to Champion L78C and is widely used by OEMs such as Yamaha, Mercury, Mariner, Suzuki, and more.
Main Features:
- Model: NGK B8HS
- Thread Size: 14 mm
- Reach: 12.7 mm (1/2″)
- Hex Size: 20.8 mm (13/16″)
- Resistor: No
- Heat Range: 8 (cooler)
- Electrode Type: Standard tip, copper core
- Champion Equivalent: L78C
Compatible Engine Brands:
- Mariner
- Yamaha
- Suzuki
- Mercury
- Tohatsu
- Selva
- Honda (2-stroke)
Benefits:
- Delivers strong spark for clean and efficient combustion
- Ideal for outboards without RFI-sensitive electronics
- Proven OEM fit and heat dissipation performance
- Trusted by marine professionals and repair services
Technical Specifications Table:
| Parameter | Value |
|---|---|
| Item Code | 47.558.03 |
| Model | NGK B8HS |
| Thread Size | 14 mm |
| Reach | 12.7 mm (1/2″) |
| Hex Size | 20.8 mm (13/16″) |
| Resistor | No |
| Champion Equivalent | L78C |
| Application | 2-stroke marine outboards |
The Osculati 47.558.03 – NGK B8HS spark plug is a durable and efficient solution for standard 2-stroke outboard ignition systems. With its non-resistor configuration and proven compatibility across major engine brands, it ensures excellent combustion and marine-grade reliability.
