41112-ZY6-612 Vertical Shaft - Overview. The 41112-ZY6-612 Vertical Shaft is a precision-engineered component designed for Honda marine engine systems, particularly in marine power transmission applications. This vital shaft functions as a core rotating element that transmits mechanical power within the engine system, ensuring efficient and reliable operation. Custom-built to meet exact factory specifications, the 41112-ZY6-612 vertical shaft integrates smoothly with existing hardware, preventin