The inside diameter of carburetor:19mm/0.75",The outside diameter connected with air filter:37mm/1.45",Bolt Hole Spacing (engine side) : 48mm/1.89" (on center)
The item fits for 50cc 70cc 90cc 110cc 125cc ATV Dirt Bike and Go Kart Horizontal Engine,hand choke carb
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