16198-ZZ5-000 Drain Tube - Overview. The 16198-ZZ5-000 Drain Tube is a genuine Honda OEM part designed to support the drainage system of Honda marine engines. It plays a critical role in facilitating the controlled drainage of fluids from the marine propulsion system, ensuring the engine operates efficiently and reliably. Its precise engineering guarantees seamless integration with existing marine hardware, maintaining optimal performance and durability.. Key Features. OEM Honda component design