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 ...
Piston Pin Retainers, and are intended for use with the O.S. O.S. 91HZ-PS, and 91HZ F3C Helicopter Engines, and the O.S. 75AX, and FS-110-a Engines. This Part Is Compatible With The Following ...