Walbro WT-668 carb with manifold and lainkage, as shown. Comes standard on Chung Yang RC engines. 30.5mm center to center bolt pattern. The 668 carb has a 19mm inlet, 12.75mm venturi, and a 15.75mm outlet. Also features high and low speed fuel adjustment screws. Includes throttle cable bracket that goes in-between the carb and the air filter. Also includes choke lever.