Our 250cc KunFu carburetor was designed specifically for today’s GY6 style engines, used extensively in the go-kart and street scooter industry The ever popular 250cc GY6 scooter engines are clones of a Honda engine design that achieved global popularity with Honda’s ubiquitous CN250 scooter Description Our 250cc KunFu carburetor was designed specifically for today’s GY6 style engines, used extensively in the go-kart and street scooter industry. The ever popular 250cc GY6 scooter engines are clones of a Honda engine design that achieved global popularity with Honda’s ubiquitous CN250 scooter. The CN250 was known as the Helix in the North American market, and called the Fusion throughout most of the rest of the world. One of the first maxi-scooters, the excellent CN250 engine spawned numerous Chinese-made clones by a vast array of manufacturers, brands and models. If your Chinese scooter uses a 250cc GY6 engine, then the chances are better than excellent that this is the correct carburetor for your model. In addition to street legal motor scooters, this carb may also find its place on various ATVs and go-karts using the 250cc GY6. You should carefully check the specifications and images for compatibility with your existing carburetor prior to ordering. The KunFu brand is a premium brand of carburetors that is made in Japan. Specifications Engine Size(s): 250 cc Engine Intake Inner Diameter: 30 mm Engine Intake Outer Diameter: 36 mm Air Intake Outer Diameter: 50 mm Air Intake Inner Diameter: 44 mm Overall Depth: 11 cm Overall Width: 11.5 cm Overall Height: 16.5 cm Choke: Electric auto bystarter Choke Location: Left Connector: 2 pin Connector Wire Length: 35 cm Fuel Line Inner Diameter: 5 mm Fuel Line Outer Diameter: 8 mm Vacuum Hose Inner Diameter: 5 mm Vacuum Hose Outer Diameter: 8 mm Drain: No Fuel Shutoff: No