41100-ZVT-601ZC Gear Nhb14m Case - Overview. The 41100-ZVT-601ZC Gear Nhb14m Case is a crucial component in Honda marine engine systems. This gear case assembly supports the marine transmission system by enclosing and protecting the internal gears, ensuring smooth mechanical motion and safeguarding from environmental elements. Precision-engineered for Honda's active marine line, it maintains optimal engine drive functionality. Manufactured to exact factory specifications, it ensures seamless int