FS-95V Valve Spring Seat Replacement OS40960300 for RC Engines by O.S. Engine  [OS40960300]

Valve spring seat: product summary

This O.S. Engine OS40960300 valve spring seat is a replacement component specified for the FS-95V engine and intended for RC engine maintenance and rebuild work. The description emphasizes correct fitment and the part's role rather than making performance claims.

Compatibility is tied to the FS-95V identifier shown in the product title; installers should verify the OS40960300 part number against their engine or the service manual before fitting. The seat forms the mounting interface between the valve spring and the cylinder head within the engine's valve train and serves a basic mechanical purpose during servicing.

When swapping the valve spring seat, inspect adjacent parts such as valve keepers, valve springs, and guides for wear. Proper seating and clean contact surfaces help preserve valve timing geometry and reduce the risk of binding during tuning, rebuilds, or after competitive use on RC tracks.