11412-ZY6-010 Chain Case Cover - Overview. The 11412-ZY6-010 Chain Case Cover is an essential component of Honda marine engine systems, serving as the protective housing for the engine's chain mechanism. By shielding the chain case, it helps maintain the mechanical integrity and smooth operation of the engine's timing and power transmission systems. Designed to fit seamlessly with Honda's robust engine architecture, this cover ensures optimal protection against environmental elements and mechani