41100-ZZ0-040ZB Gear Nhb14M Case - Overview. The 41100-ZZ0-040ZB Gear Nhb14M Case is a crucial component within Honda marine engine systems. This gear case assembly serves as the housing and protective enclosure for the gears in the lower unit, ensuring smooth transmission of power from the engine to the propeller. Designed with precision to meet factory specifications, it guarantees optimal performance, durability, and integration with existing hardware and seals.. Key Features. Genuine OEM gea