For 49cc & 50cc 139QMB 4-stroke engines Standard or Chrome finish Electric choke Broad compatibility This CVK-style 50cc scooter carburetor made by Keihin is designed specifically for 50cc QMB139 4-stroke scooter, ATV, and dirt bike engines This carburetor is equipped with an electric choke 30 Day Warranty Description This CVK-style 50cc scooter carburetor made by Keihin is designed specifically for 50cc QMB139 4-stroke scooter, ATV, and dirt bike engines. This carburetor is equipped with an electric choke. Best of all, you can select your superb little 139QMB carburetor in either a standard gray metal finish or a super-cool chrome-plated finish. The chrome finish may not make this carb mix gas and air any better than the standard “carb-colored” carburetor, but it sure will look distinctive mounted on your machine’s 139QMB engine. Prior to ordering, please compare the Specs for this carburetor against your original carburetor. This carburetor is commonly used on products from Baja Motorsports, Chuanl, Geely, Kymco USA, Manco, Panterra, Peace, Roketa, Strada, SunL, Tank, and Vento. Connector color may vary. Specifications Engine Size(s): 49cc-50cc 4-Stroke Engine Intake Inner Diameter: 19 mm Engine Intake Outer Diameter: 26 mm Air Intake Outer Diameter: 39 mm Air Intake Inner Diameter: 36 mm Overall Depth: 9.5 cm Overall Width: 11.5 cm Overall Height: 10.5 cm Choke: Electric auto bystarter Choke Location: Left Connector: 2 pin Connector Cord Length: 60 cm Fuel Line Length: 6 cm Fuel Line Inner Diameter: 4 mm Fuel Line Outer Diameter: 8 mm Vacuum Hose Length: 28 cm +/- Vacuum Hose Inner Diameter: 4 mm Vacuum Hose Outer Diameter: 8 mm Drain: No Fuel Shutoff: No