41100-ZVP-602ZB Gear Nhb14m Case - Overview. The 41100-ZVP-602ZB Gear Nhb14m Case is an essential component within Honda marine engine systems, specifically designed to house the internal gears that facilitate smooth mechanical motion in the marine gearbox. This genuine OEM part ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Specifically engineered as a gear case assembly for marine applications under the NHB14M designation.. A ge