This 18mm carburetor is a direct replacement for the Honda style 5.5HP (GX160) motor which has thousands of applications in the global market. One of the most commonly used engine types worldwide. Commonly used in the powersport industry for 97cc engines and is the most common direct replacement carburetor for the Baja Blitz, Baja Dirt Bug, Baja Doodle Bug, & Baja Racer Mini Bikes. Similar to part number 80A1191 with a different choke handle profile. This carburetor works on our engine #10A9000. Corresponding Honda part number is 16100-ZH8-W61 or P18-100.