41112-ZY1-C00 vertical shaft - Overview. The 41112-ZY1-C00 Vertical Shaft is an essential component in Honda marine engine systems. This part is responsible for transmitting rotational power from the engine down through the gearcase, supporting the propulsion system that drives your boat reliably across the water. Designed specifically for Honda vertical shaft outboard motors, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Vert