50201-ZW9-C10ZA Swi*Nh282mu* Case - Overview. The 50201-ZW9-C10ZA Swi*Nh282mu* Case is a critical component of Honda marine engine systems, specifically designed to support the swivel case assembly. It plays an essential role in housing and protecting internal engine components while facilitating smooth mechanical motion within the swivel system. Engineered to stringent OEM specifications, this case ensures seamless integration with existing parts, maintaining optimal performance and durability.