16620-ZZ5-010 Fuel Line - Overview. The 16620-ZZ5-010 Fuel Line is a critical component of Honda marine engine systems. It functions within the fuel delivery system, ensuring safe and efficient transport of fuel from the tank to the engine. Designed to meet factory specifications, this genuine Honda part guarantees seamless integration, maintaining the engine's optimal performance and durability.. Key Features. The Fuel Line is an OEM part engineered specifically for Honda marine engines, adheri