Each gasket kit includes Base, Muffler, Exhaust Pipe, Carburetor, Inlet and Cylinder Head Cover Gaskets. Head Gaskets not included. Gasket Kits vary by model. Our Gasket Kits are engineered and manufactured specifically for the repair environment. This aftermarket gasket kit was specifically designed to meet or exceed the rigid specifications of the Honda GX Series. This quality gasket kit is specifically designed to fit all GX160, GX200, GX240, GX270, GX340, GX390 Honda Engines. MTM Hydro supplies high-quality aftermarket Honda GX Engine Parts.