SKU:
Osculati-47.558.37
$ 10,50
1-2 weeks delivery time
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NGK BR5HS (Osculati 47.558.37) is a short-reach, resistor-type marine spark plug designed for 2-stroke outboards from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. It features a 14 mm thread, 12.7 mm reach, 20.8 mm hex size, and a 0.7–0.8 mm factory-set gap. Cross-compatible with Champion L90C. Ideal for clean combustion in small-displacement engines.
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Osculati 47.558.37 – NGK BR5HS Marine Spark Plug
The NGK BR5HS (Osculati 47.558.37) is a resistor spark plug specifically designed for marine 2-stroke outboard engines. With a short 12.7 mm reach and a heat range of 5, it provides reliable cold starts and clean combustion under variable load conditions. Its compact dimensions make it perfect for small displacement engines where space is limited, and its internal resistor helps eliminate electromagnetic interference (EMI) with marine electronics.
Key Features:
- Resistor-type for reduced EMI interference
- Short 12.7 mm reach for shallow cylinder heads
- Nickel alloy electrode for marine durability
- Optimized for low-to-mid temperature combustion (heat range 5)
- Ideal for compact 2-stroke outboard engines
Technical Specifications:
Attribute Value Model NGK BR5HS Osculati Code 47.558.37 Thread Diameter M14 × 1.25 mm Reach 12.7 mm Hex Size 20.8 mm Heat Range 5 Gap 0.7 – 0.8 mm Electrode Type Standard Resistor Yes
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Suzuki
- Tohatsu
- Selva
- Honda
Cross Reference:
Brand Model NGK BR5HS Champion L90C
The NGK BR5HS is a go-to spark plug for service technicians working with lightweight, small-bore 2-stroke outboards. Its compact size, resistor design, and optimized heat range ensure reliable ignition and spark stability in varying marine conditions.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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