SKU:
Osculati-47.558.74
€ 6,53
1-2 weeks delivery time
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NGK B6S (Osculati 47.558.74) is a non-resistor marine spark plug with M14 × 1.25 mm thread, 12.7 mm reach, 20.8 mm hex, and 0.7 mm standard gap. Suited for legacy 2-stroke marine engines by Yamaha, Mercury, Suzuki, Tohatsu, Honda, Selva, and Mariner. Offers stable spark and strong performance in simple ignition systems. Fully interchangeable with Champion J8C.
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Osculati 47.558.74 – NGK B6S Marine Spark Plug
The NGK B6S (Osculati 47.558.74) is a standard-type, non-resistor spark plug designed for older 2-stroke outboard engines. Its simple nickel alloy construction, standard electrode, and robust thermal profile make it a reliable choice for basic ignition systems without digital interference concerns. With a short 12.7 mm reach and M14 thread, it fits a wide range of traditional outboard cylinder heads.
Key Features:
- Non-resistor type for maximum spark transfer and simplicity
- Short thread reach (12.7 mm) suitable for vintage and mid-century outboards
- Standard heat range (6) optimized for normal marine duty cycles
- Classic design with durable nickel alloy electrodes
- Direct replacement for Champion J8C in 2-stroke marine engines
Technical Specifications:
Attribute Value Model NGK B6S Osculati Code 47.558.74 Thread Diameter M14 × 1.25 mm Reach 12.7 mm Hex Size 20.8 mm Heat Range 6 Gap 0.7 mm Electrode Type Standard Resistor No
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Suzuki
- Honda
- Tohatsu
- Selva
Cross Reference:
Brand Model NGK B6S Champion J8C
The NGK B6S is an excellent spark plug for classic 2-stroke outboards where simplicity, direct spark delivery, and ease of maintenance are key. A trusted choice for older engines still in operation today, particularly in freshwater applications or well-maintained vintage craft.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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