Fully assembled GX160 cylinder head kit,even the muffler studs and spark plug are pre-assembled. A real ready-to use product saves you a lot of time and energy.This is the most complete GX160 cylinder head assembly can be found on the market.Contains push rods,valve cover, gaskets and everything for a perfect head kit. Besides, two feeler gauges are provided too, helping set the valve clearance easily and precisely. This is the important premise for your motor to run as well as it should. Replaces Honda GX160 engine head part numbers # 12210-Z4M-405 12210-ZH8-405 12210-ZH8-415 12200-ZF1-000. Replaces Honda 5.5hp cylinder head kit. Fits Honda GX160 5.5 hp engine and many power equipment with GX 160 163cc 5.5 hp OHV horizontal engine, including water pump,pressure washer, log splitter, chipper shredder, air compressor, generator and many other power equipment powered by Honda GX160 163cc engine. This 14cc GX 160 cylinder head assembly fits many 163cc 5.5 horse power Honda GX160 clone engine.This cylinder head assy for Honda 160GX is the most complete head can be found on the market. This GX160 engine head kit for Honda GX160 is assembled with professional equipment. The best quality replacement Honda 163cc cylinder head kit. This 14cc assemble cylinder head kit fits Honda GX160 GX160D GX160H1 GX160H2 GX160K1 GX160RT1 GX160RT2 GX160T1 GX160T2 GX160U1 GX160U2 GX160UD GX160UH2 GX160UT1 GX160UT2 5.5hp engine and power equipment with GX 160 163cm3 5.5 horsepower 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.