This assembled Honda cylinder head kit fits Honda GX160 5.5hp engine and power equipment with GX 160 engine. It contains all parts you need, including Honda GX160 head,valve cover, valves,valve spring,spark plug,insulator, head gasket, valve cover gasket, carburetor gasket set, muffler gasket, all studs,bolts, nuts and others as picture. Fully assembled Honda GX 160 cylinder head kit to save your time and energy.Valves,springs, rockers,spark plug and muffler studs are all assmbled.Come together with feeler gauges helping you set the valve clearance very easily and precisely. This is the important premise for your motor to run as best as it can This Honda gx160 head kit contains cylinder head,valve cover, valves,rockers,valve spring,spark plug,insulator, head gasket, valve cover gasket, carburetor gasket set, muffler gasket, all studs, bolts and nuts, dowel pins and others as picture.all you need for cylinder head rebuild are involved Fits Honda GX160 5.5 hp engine and many power equipment with GX 160 engine, including water pump,pressure washer and more Fits many other power equipment with Honda GX160 engine