41100-ZV7-729ZB Gear Nhb14M Case - Overview. The 41100-ZV7-729ZB Gear Nhb14M Case is a crucial component within Honda marine engine systems. This genuine Honda OEM part supports the gearbox system, ensuring reliable mechanical motion and seamless operation of your marine engine. Engineered to meet strict factory specifications and tolerances, it guarantees compatibility and integration with existing parts, preserving optimal performance and durability.. Key Features. Genuine OEM Honda Gear Nhb14