23170-ZVL-020ZA Mount *NH8* Case - Overview. The 23170-ZVL-020ZA Mount *NH8* Case is an essential component of Honda marine engine systems. This mount case supports engine mounting by providing a secure and stable connection point, ensuring the engine remains firmly in place during operation. Designed to meet exact factory specifications, it guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda part designed specific