31110-ZVD-601ZA Flywheel Black - Overview. The 31110-ZVD-601ZA Flywheel Black is an essential component of Honda marine engine systems. This flywheel plays a vital role in the power transmission system by engaging with other engine parts to facilitate smooth and efficient engine operation. Designed with precision to match factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Direct OEM replacement designed spec