99101-ZH8-0880 Main (#88) Jet - Overview. The 99101-ZH8-0880 Main (#88) Jet is a genuine Honda OEM part designed for the fuel system in Honda marine engine systems. This main jet controls the flow of fuel into the carburetor at higher throttle openings, ensuring the engine runs efficiently and reliably. It is precisely engineered to fit seamlessly, maintaining optimal performance and durability.. Key Features. Controls fuel flow in the carburetor for proper air-fuel mixture at higher engine spee