07946-MJ0A100 Shaft Driver - Overview. The 07946-MJ0A100 Shaft Driver is a critical component within Honda marine engine systems, engineered to efficiently transmit rotational power from the engine to the propeller shaft. It supports the marine drive system by ensuring reliable mechanical motion that propels the vessel. Designed to meet or exceed OEM standards, it guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine Honda