SKU:
Osculati-47.557.20
$ 7,31
1-2 weeks delivery time
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Osculati 47.557.20 – Champion RA8HC is a resistor-type spark plug with a projected core nose, designed for high-efficiency combustion in modern 4-stroke marine engines. Featuring a 14 mm thread, 19 mm (3/4") reach, 16 mm (5/8") hex, and copper core, it ensures optimal ignition, corrosion resistance, and reliable suppression of radio frequency interference (RFI).
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Osculati 47.557.20 – Champion RA8HC Spark Plug
The Osculati 47.557.20 features the Champion RA8HC, a resistor-type spark plug with a projected nose design optimized for clean combustion and ignition reliability. It is ideal for 4-stroke outboard and inboard engines where RFI suppression and stable performance under variable load are critical. Its copper core electrode enhances thermal conductivity and service life in marine environments.
Main Features:
- Model: Champion RA8HC
- Thread Size: 14 mm
- Reach: 19 mm (3/4")
- Hex Size: 16 mm (5/8")
- Resistor: Yes – built-in for RFI suppression
- Electrode Type: Projected nose, copper core
- Application: 4-stroke marine engines
- Marine Grade: Yes – corrosion-resistant materials
Benefits:
- Stable ignition and optimal combustion under load
- Suppresses interference with GPS, radios, and other electronics
- Copper core ensures excellent heat dissipation and plug longevity
- Marine-grade durability in salt-heavy, humid environments
Technical Specifications Table:
Parameter Value Item Code 47.557.20 Model Champion RA8HC Thread Size 14 mm Reach 19 mm (3/4") Hex Size 16 mm (5/8") Resistor Yes Electrode Type Projected nose, copper core Application 4-stroke marine engines
The Osculati 47.557.20 – Champion RA8HC spark plug is engineered for consistent, interference-free ignition in 4-stroke marine engines. With its projected core nose and marine-grade construction, it delivers high combustion efficiency, long life, and clean performance in harsh environments.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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