O.S. Engine OS44503200 piston replacement for FS-200S and FS-200S-P engines  [OS44503200]

Piston for FS-200S series

This piston is a direct replacement part listed as OS44503200 for use with the FS-200S and FS-200S-P engine family from O.S. Engine. It is intended as an RC-scale engine component to restore compression and maintain predictable performance in glow-powered model engines.

When inspecting a worn engine, replacing the piston can bring back consistent ring-to-cylinder contact and reduce blow-by that affects idle and throttle response. This part is specified for the two models named in the product title, and should be matched to the corresponding cylinder and ring set during service.

Use this piston as a direct-fit replacement when performing routine maintenance or preparing a glow engine for tuning; verify fit and ring condition at installation to ensure reliable compression and engine response.