41100-ZZ0-614ZB Gear Nhb14m Case - Overview. The 41100-ZZ0-614ZB Gear Nhb14m Case is an essential component of Honda marine engine systems. This gear case assembly plays a critical role in housing and protecting the gears that transmit power from the engine to the propeller, ensuring smooth, reliable operation of the lower unit. Designed to fit seamlessly within the Honda NHB14M system, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Feat