Intake Manifold for FS Engines OS42569400 FSa-155-P by O.S. Engine  [OS42569400]

Direct-fit intake manifold for FS-series engines

Made as an RC-scale replacement, this intake manifold is intended to interface with O.S. Engine FS-series engine assemblies. It serves as the airflow channel between the carburettor inlet and the crankcase and is supplied for repairs or setup updates rather than full-size applications.

The design emphasises consistent fit and easy servicing: confirm the model number OS42569400 prior to purchase, check mating surfaces and gasket condition during fitment, and make sure there is clearance around the carburettor and needle assembly. Altering the manifold can change throttle response, so evaluate any swap with corresponding carburettor and exhaust adjustments.

Fitting tips: replace worn gaskets, align the manifold flange carefully, and tighten screws in a cross pattern to avoid skewing the part. If compatibility with a particular FS variant is unclear, seek confirmation from the retailer or product documentation.

This direct-fit intake manifold is suitable for FS-series engines where fit and airflow control are key; always verify OS42569400 before installation.