40151-ZY3-000ZB Fr *NHB14M* Cover - Overview. The 40151-ZY3-000ZB Fr *NHB14M* Cover is a genuine OEM replacement part designed for Honda marine engine systems, specifically for use as a front cover component. This cover plays a critical role in protecting internal engine parts and maintaining the structure integrity of the engine's extension case system. Engineered to meet strict factory standards, it ensures seamless integration with existing parts, maintaining optimal performance and durabilit