50201-ZW1-040ZD Swivel *NH565* Case - Overview. The 50201-ZW1-040ZD Swivel *NH565* Case is a critical component in Honda marine engine systems. It functions as a protective housing and mounting point within the swivel system, supporting reliable steering and operation of the outboard engine. Engineered to seamlessly integrate with existing parts, it ensures optimal performance and durability essential for marine applications.. Key Features. Genuine OEM Honda swivel case designed specifically for