41100-ZVT-610ZC Gear Nhb14m Case - Overview. The 41100-ZVT-610ZC Gear Nhb14m Case is a critical component for Honda marine engine systems. It serves as the essential housing for the NHB14M gear assembly, supporting the drive system while ensuring smooth operation and reliability. Designed specifically for Honda Active Marine engines, it maintains optimal gear alignment and protects internal components from external damage. Engineered for seamless integration with existing parts, this gear case h