50200-ZY3-406ZA Swivel Case Assembly - Overview. The 50200-ZY3-406ZA Swivel Case Assembly is an essential component within Honda marine engine systems, specifically designed for the steering system of Honda-Active Marine outboard motors. This assembly plays a crucial role in facilitating smooth and precise rotation of the outboard motor, enabling optimal directional control. Crafted to meet factory specifications, it ensures seamless integration with existing parts, maintaining optimal performan