50201-ZVT-A10ZA Swivel *NH565* Case - Overview. The 50201-ZVT-A10ZA Swivel *NH565* Case is a crucial replacement component within Honda marine engine systems. This swivel case supports the rigging and steering assemblies, ensuring smooth and reliable operation of your marine engine's mounting system. Crafted to meet exact OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda part built to factory