NGK B7HS-10 Spark Plug – Osculati 47.558.10

Osculati 47.558.10 – NGK B7HS-10 Spark Plug

The Osculati 47.558.10 includes the NGK B7HS-10 spark plug, a non-resistor marine ignition component designed for 2-stroke outboard engines. It features a 1.0 mm pre-set gap, allowing for consistent spark and combustion timing. This plug delivers a clean and efficient ignition path for engines that do not require RFI suppression. With a medium heat range and copper core electrode, it ensures thermal reliability in saltwater environments. It corresponds to Champion L77JC4.

Main Features:

• Model: NGK B7HS-10
• Thread Size: 14 mm
• Reach: 12.7 mm (1/2″)
• Hex Size: 20.8 mm (13/16″)
• Resistor: No
• Pre-set Gap: 1.0 mm
• Heat Range: 7 (medium)
• Core Type: Copper core
• Champion Equivalent: L77JC4

Compatible Engine Brands:

• Mariner
• Yamaha
• Suzuki
• Mercury
• Tohatsu
• Selva
• Honda (2-stroke models)

Benefits:

• Pre-set 1.0 mm gap for accurate and stable ignition
• Non-resistor design provides maximum spark energy
• Medium heat rating ensures anti-fouling performance
• Reliable ignition under marine thermal and humidity conditions

Technical Specifications Table:

The Osculati 47.558.10 – NGK B7HS-10 spark plug is an efficient ignition solution for marine engines where direct spark delivery is preferred over RFI protection. It’s ideal for traditional 2-stroke systems in saltwater conditions, offering stable combustion and dependable thermal performance.