98079-55841 Spark Plug (BP5ES) - Overview. The 98079-55841 Spark Plug (BP5ES) is an authentic Honda OEM component designed specifically for Honda marine engine systems. This spark plug plays a crucial role in igniting the fuel-air mixture within the combustion chamber, ensuring efficient and reliable engine operation. Tailored to meet factory specifications, it guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM sp