Includes the carburetor clamp and O-ring Intake manifold with dual vacuum fittings for GY6 scooter engines This intake manifold is compatible with the Baja Motorsports Sun City (SC150) 150cc gas scooter 30 Day Warranty Description Intake manifold with dual vacuum fittings for GY6 scooter engines. This intake manifold is compatible with the Baja Motorsports Sun City (SC150) 150cc gas scooter. Includes the carburetor clamp and O-ring. Specifications Diameter (engine side): 22.8 mm Diameter (carburetor side): 31.5 mm Mounting hole spacing:,/B> 1-3/4″