SKU:
Osculati-47.558.77
€ 14,31
1-2 weeks delivery time
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NGK CR9EB (Osculati 47.558.77) is a short-reach, resistor-type spark plug with M10 × 1.0 mm thread, 19 mm reach, 16 mm hex, and 0.7 mm preset gap. Built for high-revving marine 4-stroke engines by Yamaha, Honda, Suzuki, Mercury, Tohatsu, Selva, and Mariner. Its cold heat range (9) resists detonation under load. Direct Champion equivalent: RG4-PHP.
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Osculati 47.558.77 – NGK CR9EB Marine Spark Plug
The NGK CR9EB (Osculati 47.558.77) is a high-performance spark plug tailored for 4-stroke marine outboards requiring high thermal resistance and superior ignition consistency. Its compact M10 thread and cold-range design make it ideal for high-revving engines where cylinder temperatures remain elevated during extended throttle use. The projected insulator improves combustion efficiency, while the internal resistor protects marine electronics from EMI.
Key Features:
- Cold heat range (9) for high-speed marine engine performance
- Short M10 × 1.0 mm thread with 19 mm reach
- Built-in resistor for EMI/RFI suppression in marine systems
- Projected insulator improves ignition stability and reduces fouling
- Designed for high-compression, fuel-injected 4-stroke engines
Technical Specifications:
Attribute Value Model NGK CR9EB Osculati Code 47.558.77 Thread Diameter M10 × 1.0 mm Reach 19 mm Hex Size 16 mm Heat Range 9 (cold) Gap 0.7 mm Electrode Type Standard with projected tip Resistor Yes
Manufacturer Compatibility:
- Yamaha
- Honda
- Suzuki
- Mercury
- Tohatsu
- Selva
- Mariner
Cross Reference:
Brand Model NGK CR9EB Champion RG4-PHP
The NGK CR9EB is ideal for modern 4-stroke marine engines that demand high-compression reliability and spark stability under extreme RPM conditions. Its compact profile and heat range make it especially effective in performance applications and saltwater service environments.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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