Marine spark plugs are essential components designed to ignite the fuel-air mixture in marine engines, ensuring smooth and efficient performance. Built for outboard and inboard engines, they withstand harsh marine conditions, including exposure to saltwater and humidity.
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1-2 weeks delivery time High-performance NGK BPZ8HN-10 spark plug (Osculati 47.558.21) designed for optimal combustion and long service life in outboard engines. Commonly used on Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda motors. Cross-compatible with Champion QL78YC. Thread size: M14 × 1.25 mm, reach: 19 mm, hex size: 20.8 mm, gap: 1.0 mm. Ideal for 2-stroke and 4-stroke marine engines.
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€ 14,87
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1-2 weeks delivery time NGK BP8HN-10 marine spark plug (Osculati 47.558.22) is a high-performance ignition component designed for marine outboard engines from brands like Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. It features a thread size of M14 × 1.25 mm, 19 mm reach, 20.8 mm hex, and a preset gap of 1.0 mm. This plug is ideal for 2-stroke and select 4-stroke applications and corresponds to Champion L78YC.
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€ 7,16
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1-2 weeks delivery time NGK BR6FS spark plug (Osculati 47.558.25) is engineered for marine outboards from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. It features a short 12.7 mm reach, 14 mm thread diameter, 20.8 mm hex, and a 0.7–0.9 mm gap. This resistor-type spark plug suppresses radio frequency interference and corresponds to Champion RV9YC and RV8C. Ideal for 2-stroke engines in marine environments.
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€ 8,41
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1-2 weeks delivery time NGK BPR6EFS (Osculati 47.558.26) is a marine spark plug designed for reliable performance in outboards from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. It features a 14 mm thread, 19 mm reach, 20.8 mm hex, and factory-set 0.9 mm gap. With integrated resistor and projected insulator tip, it reduces EMI and improves cold starts. Directly interchangeable with Champion RS12YC.
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€ 9,20
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1-2 weeks delivery time NGK BPR5ES (Osculati 47.558.28) is a versatile marine spark plug with a 14 mm thread, 19 mm reach, 20.8 mm hex size, and a factory-set 0.9 mm gap. Designed for compatibility with Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda outboards. It features a built-in resistor for EMI suppression and is cross-compatible with Champion RN11YC4. Ideal for 4-stroke marine engines requiring clean, efficient combustion.
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€ 7,69
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1-2 weeks delivery time 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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€ 7,20
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1-2 weeks delivery time NGK DCPR7E (Osculati 47.558.32), often labeled as RA8-H10 in OEM marine catalogs, is a precision resistor spark plug with a 12 mm thread, 19 mm reach, 16 mm hex size, and a 0.9 mm gap. Suitable for Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda outboards. Equivalent to Champion RA8HC. Optimized for 4-stroke marine engines with compact cylinder heads and electronic ignition systems.
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€ 13,78
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1-2 weeks delivery time NGK BPR6ES (Osculati 47.558.34) is a widely used marine spark plug with a 14 mm thread, 19 mm reach, 20.8 mm hex size, and a 0.9 mm preset gap. It features a projected insulator and internal resistor, ensuring efficient combustion and reduced EMI. Compatible with Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda outboards. Interchangeable with Champion RN9YC.
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€ 7,23
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1-2 weeks delivery time NGK BR7HS (Osculati 47.558.35) is a compact resistor-type spark plug with a 14 mm thread, 12.7 mm reach, 20.8 mm hex, and preset 0.7–0.8 mm gap. Optimized for 2-stroke marine outboards from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. Designed to minimize EMI and fouling. Cross-compatible with Champion RL82C.
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€ 7,96
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1-2 weeks delivery time NGK BR6HS (Osculati 47.558.36) is a resistor-type spark plug designed for 2-stroke marine engines. It features a 14 mm thread, short 12.7 mm reach, 20.8 mm hex, and a 0.7–0.8 mm preset gap. Commonly installed in Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda outboards. Cross-compatible with Champion RL86C. Ideal for small- to mid-size engines in saltwater conditions.
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€ 8,29
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1-2 weeks delivery time 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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€ 8,69
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1-2 weeks delivery time 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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€ 11,09
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1-2 weeks delivery time NGK LFR6A-11 (Osculati 47.558.39) is a long-reach, resistor-type marine spark plug with M14 × 1.25 mm thread, 19 mm reach, 16 mm hex, and a 1.1 mm preset gap. Commonly installed in 4-stroke outboards from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. It provides clean combustion and EMI suppression for engines with advanced ignition systems. No direct Champion equivalent.
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€ 12,69
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1-2 weeks delivery time NGK CR6HS (Osculati 47.558.40) is a compact, resistor-type spark plug with a 10 mm thread, 12.7 mm reach, 16 mm hex, and a 0.7–0.8 mm factory gap. Designed for small 2- and 4-stroke marine engines from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. It suppresses EMI and ensures clean, stable combustion. Cross-compatible with Champion Z9Y.
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€ 8,99
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1-2 weeks delivery time NGK BR6HS-10 (Osculati 47.558.41) is a resistor-type marine spark plug with M14 × 1.25 mm thread, 12.7 mm reach, 20.8 mm hex, and a factory-set 1.0 mm spark gap. Optimized for 2-stroke outboards from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. Provides clean ignition with enhanced spark energy. Fully interchangeable with Champion L86C.
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€ 8,66
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1-2 weeks delivery time NGK DPR6EB-9 (Osculati 47.558.42) is a precision resistor-type spark plug featuring a 14 mm thread, 19 mm reach, compact 18 mm hex, and a 0.9 mm preset gap. Commonly used in 4-stroke marine engines by Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. Optimized for electronic ignition systems. Interchangeable with Champion RA8HC.
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€ 9,06
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1-2 weeks delivery time NGK ZFR7F (Osculati 47.558.43) is a high-performance marine spark plug featuring a 14 mm thread, 19 mm reach, 16 mm hex, and a factory-set 0.8 mm gap. It’s designed for 4-stroke outboard engines by Yamaha, Mercury, Suzuki, Mariner, Tohatsu, Selva, and Honda. The resistor and projected tip ensure precise ignition and EMI suppression. No direct Champion cross-reference is available.
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€ 13,27
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1-2 weeks delivery time NGK IZFR6F-11 (Osculati 47.558.44) is a premium iridium marine spark plug with a 14 mm thread, 19 mm reach, 16 mm hex, and factory-set 1.1 mm gap. Specifically designed for high-performance 4-stroke outboards from Yamaha, Mercury, Suzuki, Honda, Mariner, Selva, and Tohatsu. It features a fine iridium tip and resistor core for optimal combustion and EMI suppression. No Champion equivalent available.
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€ 41,61
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1-2 weeks delivery time NGK BPZ8HS-10 (Osculati 47.558.45) is a short-reach resistor spark plug with M14 × 1.25 mm thread, 12.7 mm reach, 20.8 mm hex, and a preset 1.0 mm gap. Designed for 2-stroke marine engines from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. Features a projected insulator for better anti-fouling. Fully interchangeable with Champion QL78YC.
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€ 15,63
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1-2 weeks delivery time NGK BPR7HS (Osculati 47.558.46) is a short-reach, resistor-type marine spark plug with M14 × 1.25 mm thread, 12.7 mm reach, 20.8 mm hex, and a preset 0.7–0.8 mm gap. Designed for 2-stroke outboards from Yamaha, Mercury, Mariner, Suzuki, Tohatsu, Selva, and Honda. Features a projected tip for cleaner combustion and is equivalent to Champion RL82YC.
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€ 8,87
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Why is selecting the right spark plug critical for optimal engine performance in marine applications?
Selecting the right spark plug is critical for optimal engine performance in marine applications because it ensures proper ignition, efficient fuel combustion, and reliable operation in harsh conditions. Using the correct part number guarantees compatibility with the engine, maximizing performance and preventing potential damage. This careful selection increases engine efficiency, providing the best experience on the water.
Choosing the correct part number from trusted brands like Champion Spark Plugs helps maintain engine health and ensures smooth, efficient operation on the water.
How do marine spark plugs differ from standard auto parts used in cars?
Marine spark plugs differ from standard auto parts because they are specifically designed to withstand the harsh conditions of marine environments, including exposure to saltwater, humidity, and extreme temperature fluctuations. They often feature corrosion-resistant materials and a more robust construction to handle the unique demands of outboard and inboard engines. These features ensure reliable ignition and optimal performance even in challenging marine applications.