GOOFIT PZ19 Carburetor with Air Filter for Kazuma Taotao Baja Polaris Roketa SUNL Honda XR/CRF 50cc 70cc 90cc 110cc 125cc Dirt Pit Bike Go Kart Chinese 4 Wheeler Fit for 4 stroke 49cc-125cc horizontal engine,not for GY6 engine or vertical engine,hand choke carburetor not for cable choke or electric choke carb(read description for fitment infos) Mounting bolt dimension: 47mm,the air filter interface outside diameter:37mm,Intake inside diameter:19mm This item Include Carburetor, air filter, fuel hose and gaskets.work with hand choke carb This kit does not fit for all Honda XR70/XR70R/CRF70/XR80/Z50 and early model than 2008 for CRF50 XR50 3 month warranty guaranteed