16880-ZY6-030 Fuel Tube Assembly D - Overview. The 16880-ZY6-030 Fuel Tube Assembly D is an essential component within Honda marine engine fuel systems. This assembly plays a vital role in the fuel delivery system by enabling consistent and efficient flow of fuel to the engine, thereby ensuring reliable engine operation and performance. Designed specifically for Honda marine engines, it enables seamless integration with other fuel system parts, maintaining optimal performance and durability.. Ke