14627-P8A-A00 Exhaust Rocker Arm B - Overview. The 14627-P8A-A00 Exhaust Rocker Arm B is an essential component of Honda marine engine systems, specifically designed to control the exhaust valve's operation within the engine's valve train. This critical part ensures proper valve timing and function, which plays a key role in maintaining optimal engine performance and longevity. Crafted to meet stringent factory specifications, it ensures seamless integration with existing parts, maintaining opti