SKU:
Osculati-47.558.31
€ 7,20
1-2 weeks delivery time
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NGK DPR6EA-9 (Osculati 47.558.31) is a marine-grade spark plug with a 14 mm thread, 19 mm reach, 18 mm hex size, and a factory-set 0.9 mm gap. Designed for use in Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda outboards, this resistor-type plug features a projected insulator for better anti-fouling and matches Champion RA8HC. Recommended for high-performance 4-stroke engines in marine environments.
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Osculati 47.558.31 – NGK DPR6EA-9 Marine Spark Plug
The NGK DPR6EA-9 (Osculati 47.558.31) spark plug is designed for modern 4-stroke outboard marine engines requiring stable combustion, high resistance to fouling, and minimal interference with onboard electronics. With a projected insulator and integrated resistor, it offers reliable cold starts and enhanced ignition performance in saltwater conditions. This plug is widely used in OEM applications across leading outboard brands.
Key Features:
- Resistor-type spark plug (R) reduces electromagnetic interference
- Projected insulator tip improves anti-fouling and combustion efficiency
- Nickel alloy electrodes for corrosion resistance in marine environments
- Factory-set 0.9 mm gap optimized for marine ignition systems
- Reliable fit and function for 4-stroke marine engines
Technical Specifications:
Attribute Value Model NGK DPR6EA-9 Osculati Code 47.558.31 Thread Diameter M14 × 1.25 mm Reach 19 mm Hex Size 18 mm Heat Range 6 Gap 0.9 mm Resistor Yes Electrode Type Standard with projected tip
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Suzuki
- Tohatsu
- Selva
- Honda
Cross Reference:
Brand Model NGK DPR6EA-9 Champion RA8HC
The NGK DPR6EA-9 spark plug is an excellent choice for marine technicians and boat owners looking for consistent ignition and minimal maintenance. Its advanced design supports cleaner combustion, reduced fouling, and compatibility with sensitive onboard electronics—making it suitable for demanding 4-stroke marine applications.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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