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 Osculati 47.556.00 is a specially designed outboard spark plug wrench that allows easy access under engine fairings and tight compartments. Built to fit standard spark plug sizes across most marine outboards, it offers universal compatibility and ergonomic handling for efficient plug removal and installation.
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€ 5,95
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1-2 weeks delivery time Osculati 47.557.00 – Champion J6C is a high-performance spark plug specifically designed for marine outboard engines. Known for its reliable ignition, corrosion resistance, and compatibility with a wide range of 2-stroke and 4-stroke engines, this plug ensures consistent engine performance even in demanding marine environments.
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€ 5,30
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1-2 weeks delivery time Osculati 47.557.01 – Champion QL86C is a marine-grade resistor spark plug designed to minimize electrical interference and ensure consistent ignition performance in outboard engines. It features a 14 mm thread, 9.5 mm reach, and a 21 mm hex size, making it suitable for a wide range of marine applications, particularly on 2-stroke engines where RFI suppression is critical.
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€ 7,39
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1-2 weeks delivery time Osculati 47.557.02 – Champion L77JC4 is a high-performance spark plug designed for marine 2-stroke outboard engines. It features a 14 mm thread, 9.5 mm reach, 21 mm hex, and delivers consistent spark and clean combustion under heavy-duty marine conditions. Built with corrosion-resistant materials, it's a trusted OEM-standard component for reliable engine performance.
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€ 6,16
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1-2 weeks delivery time Osculati 47.557.03 – Champion L76V is a non-resistor marine spark plug designed for high-performance outboard engines. It features a 14 mm thread, 9.5 mm reach, and 21 mm hex, delivering reliable ignition under high-compression and heavy-load conditions. Ideal for use in older or tuned marine engines where strong, consistent spark delivery is critical.
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€ 20,79
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1-2 weeks delivery time Osculati 47.557.05 – Champion L78V is a non-resistor V-groove spark plug designed for high-reliability ignition in 2-stroke outboard marine engines. It features a 14 mm thread, 9.5 mm reach, and 21 mm hex, offering optimized combustion and dependable starts under variable load and temperature conditions.
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€ 20,31
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1-2 weeks delivery time Osculati 47.557.06 – Champion L78C is a non-resistor marine spark plug designed for 2-stroke outboard engines. It features a 14 mm thread, 9.5 mm reach, and 21 mm hex, providing stable ignition and reliable cold starts. Built with corrosion-resistant materials, it's a solid choice for saltwater environments and performance marine applications.
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€ 6,21
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1-2 weeks delivery time Osculati 47.557.07 – Champion L86C is a non-resistor marine spark plug designed for 2-stroke outboard engines. It features a 14 mm thread, 9.5 mm reach, and 21 mm hex, delivering stable ignition, good anti-fouling characteristics, and durability in harsh saltwater conditions.
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€ 3,43
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1-2 weeks delivery time Osculati 47.557.08 – Champion QL77JC4 is a marine-grade resistor spark plug designed for 2-stroke outboard engines. Featuring a 14 mm thread, 9.5 mm reach, 21 mm hex, and built-in resistor, it suppresses radio frequency interference (RFI), ensuring compatibility with marine electronics and smooth ignition performance in saltwater environments.
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€ 10,44
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1-2 weeks delivery time Osculati 47.557.12 – Champion QL82C is a resistor spark plug built for 2-stroke outboard engines. Featuring a 14 mm thread, 9.5 mm reach, and 21 mm hex, it includes an integrated resistor to suppress radio frequency interference (RFI), making it ideal for use on vessels with sensitive electronic systems such as GPS, fishfinders, and VHF radios.
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€ 5,79
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1-2 weeks delivery time Osculati 47.557.13 – Champion L82YC is a non-resistor spark plug for 4-stroke and 2-stroke marine engines requiring strong, direct ignition. With a 14 mm thread, 19 mm (3/4") reach, and 16 mm (5/8") hex, it is ideal for outboards or inboards that do not require RFI suppression. Its copper core ensures efficient heat transfer and long-term reliability.
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€ 4,63
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1-2 weeks delivery time Osculati 47.557.14 – Champion QL78YC is a marine resistor spark plug designed for outboard and inboard engines requiring reduced radio frequency interference (RFI). With a 14 mm thread, 19 mm (3/4") reach, 16 mm (5/8") hex, and copper core construction, it provides stable ignition and high resistance to marine corrosion.
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€ 6,39
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1-2 weeks delivery time Osculati 47.557.16 – Champion RV8C is a resistor-type marine spark plug designed for 2-stroke and 4-stroke outboards and inboards requiring RFI suppression. Featuring a 14 mm thread, 19 mm (3/4") reach, 21 mm (13/16") hex, and a copper core, it provides powerful ignition, durability, and reliable protection for onboard electronics.
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€ 5,60
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1-2 weeks delivery time Osculati 47.557.19 – Champion QL78C is a resistor-type spark plug designed for marine 2-stroke engines where suppression of radio frequency interference (RFI) is essential. It features a 14 mm thread, 9.5 mm (3/8") reach, and a 21 mm (13/16") hex, making it compatible with a wide range of outboards operating in saltwater environments.
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€ 6,46
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1-2 weeks delivery time Osculati 47.557.20 – Champion RA8HC is a resistor-type spark plug with a projected core nose, designed for high-efficiency combustion in modern 4-stroke marine engines. Featuring a 14 mm thread, 19 mm (3/4") reach, 16 mm (5/8") hex, and copper core, it ensures optimal ignition, corrosion resistance, and reliable suppression of radio frequency interference (RFI).
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€ 6,05
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1-2 weeks delivery time Osculati 47.557.27 – Champion RV15YC4 is a resistor spark plug designed for marine 4-stroke engines. It features a 14 mm thread, 19 mm (3/4") reach, 16 mm (5/8") hex, and a copper core with projected nose for stable combustion. Built for long service life and interference-free operation, it’s ideal for modern engines with onboard electronics.
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€ 6,53
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1-2 weeks delivery time Osculati 47.557.28 – Champion L82C is a non-resistor spark plug for 2-stroke marine engines that require maximum ignition energy without radio frequency interference (RFI) suppression. With a 14 mm thread, 19 mm (3/4") reach, and 16 mm (5/8") hex, it’s designed for simplicity, reliability, and consistent performance in saltwater conditions.
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€ 3,43
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1-2 weeks delivery time Osculati 47.557.29 – Champion L78YC is a non-resistor spark plug featuring a 14 mm thread, 19 mm (3/4") reach, and 16 mm (5/8") hex. Built with a copper core and standard tip, it delivers strong ignition and thermal stability, ideal for 2-stroke or 4-stroke marine engines not requiring RFI suppression.
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€ 5,91
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1-2 weeks delivery time Osculati 47.557.36 – Champion RS12YC is a resistor-type spark plug with a copper core, designed for 4-stroke marine engines requiring RFI suppression. With a 14 mm thread, 19 mm (3/4") reach, and 16 mm (5/8") hex, this plug ensures reliable starts, clean combustion, and stable performance in saltwater environments.
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€ 4,31
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1-2 weeks delivery time Osculati 47.557.46 – Champion XC12PEPB is a high-performance resistor spark plug with a projected nose and copper core, engineered for 4-stroke marine engines under high thermal load. With a 14 mm thread, 19 mm (3/4") reach, and 16 mm (5/8") hex, it ensures precise ignition, extended durability, and full compatibility with onboard electronics.
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€ 8,94
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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.