Replacement Case for Futaba S3117 / S3157 - FUAS3273  [FUAS3273]

Overview of the Futaba FUAS3273 Case

This Futaba FUAS3273 servo case set is a replacement outer shell for Futaba S3117 and S3157 servos, and references the original internal codes AS3273 and EBS3357. The unit ships without retail packing and is intended as a spare housing for hobby servo maintenance.

The component supplies the structural shell and mounting interfaces that secure the circuit board and gearbox inside the servo. Replacing a damaged case restores the intended footprint so the servo mounts correctly in radio trays and aligns with output horns.

Installation suits those familiar with servo servicing: extract the servo, disconnect any leads or motor connections if necessary, remove fasteners with the right hex key, move the internals into the new case, check gear engagement and travel limits, then reassemble and bench-test. Standard hobby tools and a tidy workspace are sufficient.

Use this case set for repair of cracked housings, when altering mounting layout, or for preparing a servo for detailed bench tuning; it is meant for model-scale hobby use only.