50203-ZVA-000ZA Cap *NH246* - Overview. The 50203-ZVA-000ZA Cap *NH246* is a critical component designed specifically for Honda marine engine systems. It serves as a swivel case cap that provides essential coverage and protection to the swivel case assembly, ensuring the smooth operation and reliability of your marine engine. Crafted to seamlessly integrate with Honda's original hardware, this part maintains the factory's precise specifications, ensuring optimal performance and long-lasting dura