40201-881-842Zb Case Nh282mu - Overview. The 40201-881-842ZB Case Nh282mu is an essential component designed for Honda marine engine systems. This extension case supports the mechanical housing system that ensures the reliable and smooth operation of your marine engine. As a genuine OEM part, it guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Extension case designed specifically for Honda marine engines, providing structural hou