Includes top cover gasket, jet needle (with E-ring and washer), throttle valve seal, pilot air O-ring, fuel joint O-ring, accelerator pump O-ring, needle valve O-ring, needle valve retainer screw, needle valve assembly, float bowl O-ring/gasket, overflow hose, float bowl screws and accelerator pump rod boot. Genuine Mikuni parts properly replace worn or mistreated components for HSR carburetors. Includes all the parts needed to rebuild HSR carburetors. Fits Mikuni 42/48 Carb.