Replacement Servo Shells for Futaba S3114 and S3154 - FUBS3321  [FUBS3321]

About these replacement shells for S3114/S3154

The Futaba FUBS3321 set provides replacement external cases compatible with Futaba S3114 and S3154 servos. These shells let you refresh a worn enclosure without altering the servo internals, focusing on reliable fit and simple servicing.

To install, remove the servo horn and screws, carefully transfer the internal gear train and bearings into the new shells, and reassemble while preserving bearing alignment and gear mesh. Work on a clean surface and keep components in order to prevent loss or damage.

When swapping servos during tuning, using identical replacement shells reduces the chance of misaligned mounting points, helping to keep linkages and brackets correct across repairs and setup changes.