23170-ZVT-000ZA Mount Nh8 Case - Overview. The 23170-ZVT-000ZA Mount Nh8 Case is a critical mounting component designed for Honda marine engine systems. This part supports the case mounting system, providing secure attachment and precise positioning for engine components within a marine environment. By ensuring a stable and exact fit, it maintains overall engine reliability and operational integrity. Engineered to meet factory specifications and designed for compatibility, it ensures seamless in