Futaba S9155/S9351 Servo Gear Replacement Set - FUAS4126  [FUAS4126]

Replacement gears for Futaba S9155 and S9351

This FUAS4126 gear set is an RC-scale replacement part specified for use with Futaba S9155 and S9351 servos, supplied to restore or change internal gear trains without altering the servo case.

The kit is designed for direct gear swaps: remove the servo cover, note the gear stack order, swap the worn components, and reassemble while checking gear mesh and axial endplay. The information here confirms compatibility with the S9155 and S9351 designations shown in the product name.

For routine servicing and tuning, replacing stripped or worn gears brings back the original mechanical engagement and helps preserve consistent steering and throttle response in model setups; apply light servo-grade grease only where needed and confirm smooth rotation before refitting the servo.

This FUAS4126 gear set is a maintenance replacement intended to recover mechanical reliability in compatible Futaba servos and keep model controls predictable.