SKU:
Osculati-47.558.15
$ 10,63
1-2 weeks delivery time
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Osculati 47.558.15 – NGK CR4HSB is a compact resistor-type spark plug for small-displacement marine outboards. It features a 10 mm thread, 12.7 mm (1/2") reach, 16 mm hex, and a projected-tip copper core electrode. Common in 4-stroke outboards from Yamaha, Mercury, Honda, Tohatsu, and Suzuki. No Champion equivalent.
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Osculati 47.558.15 – NGK CR4HSB Spark Plug
The Osculati 47.558.15 features the NGK CR4HSB spark plug, specifically engineered for small-displacement 4-stroke marine engines. Its compact 10 mm thread and short hex size make it ideal for tight-engine configurations such as portable outboards and tiller motors. A built-in resistor suppresses electromagnetic interference to protect sensitive onboard marine electronics like GPS and radios.
This model uses a projected-tip copper core electrode for improved spark exposure, better fuel ignition, and lower fouling risk. The plug comes pre-gapped for marine applications and offers a cold heat range, suitable for high-load, small-engine operation. While it does not have a direct Champion equivalent, it is widely used by OEMs across the marine industry.
Main Features:
- Model: NGK CR4HSB
- Thread Size: 10 mm
- Reach: 12.7 mm (1/2")
- Hex Size: 16 mm
- Tip Style: Projected
- Resistor: Yes – 5 kΩ internal resistance
- Heat Range: 4 (cold)
- Core Material: Copper core
- Champion Equivalent: – (No direct match)
Compatible Engine Brands:
- Yamaha
- Mariner
- Mercury
- Tohatsu
- Suzuki
- Selva
- Honda (compact 4-stroke models)
Benefits:
- Compact size ideal for portable outboards and small engines
- Resistor-equipped for safe use with modern electronics
- Cold-rated for high-speed operation and anti-fouling
- Projected tip ensures reliable ignition and combustion efficiency
Technical Specifications Table:
Parameter Value Item Code 47.558.15 Model NGK CR4HSB Thread Size 10 mm Reach 12.7 mm (1/2") Hex Size 16 mm Resistor Yes (5 kΩ) Heat Range 4 Tip Type Projected Champion Equivalent – Application Compact 4-stroke marine outboards
The Osculati 47.558.15 – NGK CR4HSB spark plug is the go-to option for compact marine outboards requiring electronic-safe ignition and precise combustion. Its unique size, resistor protection, and projected-tip performance make it a critical component for modern portable marine engines.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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