O.S cylinder head (without valve assemblies) for the O.S. Max FS-52 Surpass Airplane Engine and the FS-52 Helicopter Engine replaces damaged cylinder heads. Constructed of aluminum with brass alloy insert valve seats. This product includes one Cylinder Head for the O.S. ax FS-52 Surpass Four Stroke Engine, with one cylinder head gasket pre-installed.
Installing intake and exhaust valve assemblies, rocker cover, intake manifold and glow plug.