SKU:
Osculati-47.558.38
$ 13,40
1-2 weeks delivery time
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NGK LFR5A-11 (Osculati 47.558.38) is a long-reach spark plug with a 14 mm thread, 19 mm reach, 16 mm hex size, and factory-set 1.1 mm gap. Designed for modern 4-stroke marine outboards from Yamaha, Mercury, Suzuki, Tohatsu, Selva, Honda, and Mariner. This resistor-type plug features a projected tip for clean combustion and reliable ignition under load. No direct Champion cross-reference available.
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Osculati 47.558.38 – NGK LFR5A-11 Marine Spark Plug
The NGK LFR5A-11 (Osculati 47.558.38) spark plug is purpose-built for high-performance 4-stroke marine engines. It features a projected insulator nose for better combustion and fouling resistance, and an integrated resistor to suppress electromagnetic interference. The 1.1 mm wide gap is optimized for engines requiring a stronger ignition spark, improving efficiency and cold-start reliability.
Key Features:
- Resistor-type spark plug (R) – reduces EMI for marine electronics
- 1.1 mm factory-set wide gap for high-efficiency combustion
- Projected insulator tip minimizes fouling
- Solid copper core for optimal conductivity and heat dissipation
- Ideal for high-RPM, 4-stroke marine engines
Technical Specifications:
Attribute Value Model NGK LFR5A-11 Osculati Code 47.558.38 Thread Diameter M14 × 1.25 mm Reach 19 mm Hex Size 16 mm Heat Range 5 Gap 1.1 mm Electrode Type Standard with projected tip Resistor Yes
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Suzuki
- Tohatsu
- Selva
- Honda
Cross Reference:
Brand Model NGK LFR5A-11 Champion –
The NGK LFR5A-11 spark plug is widely used in modern 4-stroke outboards requiring precise combustion control and minimal electrical noise. Its extended reach and wide gap are suited for high-compression engines that demand consistent ignition even under heavy marine operating conditions.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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