41100-ZZ3-651ZC Case Gear *NHB14M* - Overview. The 41100-ZZ3-651ZC Case Gear *NHB14M* is a genuine Honda marine gear case designed specifically for the NHB14M gear system. This part plays a critical role in the lower unit of Honda marine outboard motors, facilitating the transfer of mechanical power from the engine to the propeller. Engineered to maintain seamless integration with existing hardware and systems, it ensures consistent, reliable operation essential for boating performance.. Key Fea