Honda Vertical Shaft 41112-ZV5-A11 - Overview. The Honda Vertical Shaft 41112-ZV5-A11 is a vital component within Honda marine engine systems, engineered for the effective transmission of mechanical power from the engine to the propeller. This vertical shaft plays a key role in maintaining smooth operation and optimal performance of the marine propulsion system. Designed to integrate seamlessly with existing parts, it ensures durability and precise alignment to factory specifications, keeping yo