98079-56841 Spark Plug (Bp6Es) - Overview. The 98079-56841 Spark Plug (Bp6Es) is an essential component in Honda marine engine ignition systems. It plays a critical role in igniting fuel by generating a precise electric spark that enables efficient engine operation. Designed specifically for Honda marine engines, this spark plug ensures reliable combustion, stable engine performance, and consistent start-up.. Key Features. Genuine OEM spark plug designed to meet or exceed factory specifications.