TCMT Replacement Carb Fuel System Carburetor For Honda ATV ATC250ES BIG RED 1985 1986 1987 Good at mixing fuel and air,Keep engine running smoothly,Material:Zinc alloy Inner Diameter (intake side):33mm,Outer Diameter (intake side):39mm Inner Diameter (air filter side):50mm,Outer Diameter(air filter side):54mm Give your machine the new power and torque it really deserves Package included:1 x carburetor (4 Stroke)