Replacement Intake Manifold FSa-81 for FS-series - O.S. Engine OS44868000  [OS44868000]

Replacement Manifold for FS Engines

This RC-scale intake manifold is produced as a replacement for O.S. Engine FSa-81 style units used in FS-series engines. It provides a secure path for intake air and connects the carburettor or intake assembly to the engine intake port with consistent alignment for RC model use.

Fitting is generally simple on FS-style housings: remove the carburettor, align the manifold flange to the engine intake, and refit the original mounting hardware to preserve alignment and sealing. Confirm gasket condition and renew the seal if needed to stop air leaks that will affect idle quality and throttle response.

In tuning terms the manifold modifies intake flow geometry and can influence throttle feel and mid-range power in glow RC engines. Swapping a degraded manifold for a correct replacement helps achieve repeatable idle and steadier results when adjusting the engine on the bench or track. This product is intended only for RC use.