16166-ZW2-H31 Main Nozzle - Overview. The 16166-ZW2-H31 Main Nozzle is an essential carburetor component within Honda marine engine systems. This high-quality OEM part regulates the flow of the main fuel mixture into the combustion chamber, ensuring that the engine maintains optimal fuel delivery and performance. Crafted to meet precise factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Essential carburetor main nozzle that controls fuel flow to the engine combustion chamber.. Genuine Honda OEM part guaranteeing exact material quality and dimensions.. Maintains fuel system integrity and efficient engine combustion for marine engines.. Designed to match precise factory specifications, dimensions, and tolerances.. Ensures clean and secure integration with existing carburetor assembly components.. OEM-style design supports engine reliability, consistent performance, and durability.. Why Choose Genuine