16881-ZY6-A00 Fuel Tube D - Overview. The 16881-ZY6-A00 Fuel Tube D is a genuine Honda marine engine part that plays a vital role in the fuel system by delivering fuel efficiently and reliably to your Honda marine engine. This fuel tube maintains essential fluid flow integrity and prevents fuel leaks, ensuring smooth and dependable engine operation. Precision-engineered to exact Honda specifications, it guarantees proper fit and function within your existing fuel delivery system, preserving the