41100-ZVT-710ZC Gear Nhb14M Case - Overview. The 41100-ZVT-710ZC Gear Nhb14M Case is a crucial component within Honda marine engine systems. It primarily supports the gearcase system, responsible for housing the gears that transfer power from the engine to the propeller shaft, ensuring effective propulsion. Manufactured to precise OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This is a genuine OEM Gear Nhb1