99101-MAZ-1080 Main (#108) Jet - Overview. The 99101-MAZ-1080 Main (#108) Jet is an essential component of the fuel system in Honda marine engines. It regulates the flow of fuel through the carburetor at higher throttle openings, providing precise fuel mixture control for efficient combustion and reliable engine performance. Engineered to meet exact factory specifications, this main jet ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Feature