99101-ZV5-1050 main (#105) jet - Overview. The 99101-ZV5-1050 main (#105) jet is a critical component in the fuel system of Honda marine engine systems. It regulates the fuel flow at higher throttle settings, ensuring your engine receives the correct fuel mixture for efficient combustion and peak performance. Designed to exact factory specifications, it integrates seamlessly with the carburetor system to maintain optimal engine function and durability.. Key Features. Genuine OEM Honda main jet s