This is a replacement O.S. Engines Backplate Cover ...
Gasket, and is intended for use with the O.S. 91HZ F3C and 91HZ-PS 3D Helicopter Engines, as well as the O.S. FS200S-P, FS200S, and FS110-a four stroke engines. This product was added ...
This is a replacement O.S. Engines Cooling Head, ...
intended for use with the O.S. 50 SX-H Ring Hyper Helicopter Engine. This cooling head is also suitable for use with the standard 50 SX-H Ring Helicopter Engine. This product was added ...