Carburetor kit, Fit for Honda Foreman 400 1997-2004; for Honda Foreman 450 1998-2004; for Honda Rancher 350 1987-2000. Size: Inner Diameter (intake side): 33mm/ Outer Diameter (intake side): 39mm, Inner Diameter (air filter side): 50mm/ Outer Diameter(air filter side): 54mm. Considering the difference of engine status, you may need to make some adjustments during the installation process. This carburetor is manufactured to the highest production standards which means that it is good at mixing fuel and air, keeps your engine running smoothly and prevents engine from lacking of oil or spilling. Carburetor kit includes(as the picture shows):1x Black Throttle Base Cover, 1Throttle Base Cover Screw, 1x Throttle Cable, 1x Fuel Filter, 1x Air Filter , 1x Oil Filter , 1x Spark Plug