50201-ZY3-C11ZD Swivel *NH565* Case - Overview. The 50201-ZY3-C11ZD Swivel *NH565* Case is an essential component supporting Honda marine engine systems. It provides crucial rotational movement necessary for smooth mechanical operation and stability of marine equipment. Designed to meet factory specifications, this swivel case ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. The swivel case allows precise rotational motion, which is