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Osculati 47.558.85 – NGK BPZ8HS-15 Marine Spark Plug
The NGK BPZ8HS-15 (Osculati 47.558.85) is a cold-range spark plug optimized for high-RPM 2-stroke marine engines operating under intense thermal load. Its non-resistor configuration allows maximum spark energy transfer, while the wide 1.5 mm preset gap enhances ignition in lean or air-rich fuel mixtures. The projected insulator tip provides better exposure to the combustion chamber, improving cold starts and reducing fouling.
Key Features:
- Cold heat range (8) – designed for high-speed engine protection
- Wide spark gap (1.5 mm) – ideal for improved combustion and cold ignition
- Short 12.7 mm thread reach – standard for many marine engine heads
- Non-resistor type – maximum voltage transfer in analog systems
- Projected insulator tip – enhanced flame front propagation
Technical Specifications:
Attribute Value Model NGK BPZ8HS-15 Osculati Code 47.558.85 Thread Diameter M14 × 1.25 mm Reach 12.7 mm Hex Size 20.8 mm Heat Range 8 (cold) Gap 1.5 mm Electrode Type Standard with projected insulator Resistor No
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Honda
- Suzuki
- Tohatsu
- Selva
Cross Reference:
Brand Model NGK BPZ8HS-15 Champion –
The NGK BPZ8HS-15 is best suited for high-performance 2-stroke outboards that require a cold, high-energy spark plug with a wide gap. It supports cleaner combustion, quicker throttle response, and dependable ignition under marine-specific load cycles, especially when running lean mixtures or during prolonged high-speed operation.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -