23170-ZY6-000ZA Mount Nh8 Case - Overview. The 23170-ZY6-000ZA Mount Nh8 Case is a critical mounting component supporting Honda marine engine systems. This OEM part plays an essential role by securely housing and stabilizing key engine elements within the boat, helping to maintain system stability and operational reliability. Designed with a robust NH8 finish, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine Honda par