98079-55855 S/PLG (W16EPR-U) - Overview. The 98079-55855 S/PLG (W16EPR-U) is a premium spark plug specifically engineered for Honda marine engine systems. This essential component supports the ignition system, playing a crucial role in reliable engine starting and consistent performance. Designed to sustain optimal combustion, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precisely crafted spark plug with copper core material for enhanced electrical conductivity.. OEM/genuine Honda part, guaranteeing exact fit, quality, and performance.. Thread size of 14mm, designed for optimal installation and secure mounting.. Compatible with various Honda marine engines, including GX series and small engines.. Matches factory specifications, dimensions, and tolerances for reliable operation.. Integrates cleanly with existing hardware, ensuring durability and longevity in marine environments.. Why Choose Genuine OEM. Using origina