O.S. Engine FS-120S Head Gasket OS45514022  [OS45514022]

Gasket specifically for FS-120S

This head gasket is supplied as an RC replacement for FS-120S engine assemblies to re-establish the seal between the cylinder head and crankcase during maintenance or rebuilds. The item is identified by the OS45514022 designation and matches FS-120S model geometry.

Compatibility is tied to the FS-120S reference in the part code. Confirm the engine model before purchase because OS45514022 is sized for that family of glow engines. This product is not intended for use with non-RC or full-size engines.

Typical installation for experienced hobbyists involves removing the head, cleaning and checking mating surfaces for distortion or deposits, placing the OS45514022 gasket, and reassembling. Observe correct sealing methods, avoid over-tightening head bolts, and replace the gasket whenever the head is removed to maintain compression and prevent leaks.

In everyday operation the head gasket helps keep compression stable and supports consistent engine response, aiding reliable tuning and dependable performance. Storing spare OS45514022 gaskets is a cost-effective way to limit downtime during maintenance tasks.