Futaba FUAS3273 Servo Case Set for S3117 S3157 Servos  [FUAS3273]

Futaba FUAS3273 Servo Case Set

This Futaba FUAS3273 servo case set replaces the external housing of compatible Futaba servos S3117 and S3157 and carries the product codes AS3273 and EBS3357 in the original naming. The part is supplied without retail packing and is intended as a direct replacement housing component for hobby-scale RC servos.

The article focuses on fit and function: the case provides the structural shell and mounting interface that locate the servo electronics and gear stack inside the model. When servicing or rebuilding a servo, swapping the case restores correct mounting alignment and maintains the intended servo footprint for radio tray and horn clearance.

Installation is straightforward for experienced hobby technicians: remove the servo from the model, desolder or disconnect motor and lead where necessary, open the existing case using the appropriate hex driver, transfer internal components into the replacement case, verify gear mesh and end stops, then reassemble and bench-test before reinstalling. No special tools are required beyond standard servo disassembly tools and a clean, organized workspace.

Use this case set when repairing a damaged housing, updating mounting options, or preparing a servo for bench tuning and calibration; it is designed for RC-scale hobby use only and not for full-size vehicle applications.