Servo Internal Gear Set for Futaba S9155 and S9351 - FUAS4126  [FUAS4126]

Gears for S9155 and S9351 servos

The FUAS4126 kit contains RC-scale replacement gears intended for Futaba S9155 and S9351 servos, enabling restoration or alteration of the internal gear train without modifying the outer housing.

Installation is straightforward for direct swaps: remove the lid, photograph or note the gear stack layout, replace the affected gears, then reassemble while verifying proper mesh and minimal endplay. The listing explicitly notes compatibility with the S9155 and S9351 identifiers used in the part name.

During servicing and tuning, fresh gears return the correct mechanical interface and help maintain consistent steering and throttle responses in your models; use a light smear of appropriate grease and ensure free, smooth rotation before reinstalling the servo.

The FUAS4126 is supplied as a service part for replacing internal gears in compatible Futaba servos, useful for repair and for restoring reliable mechanical operation in RC assemblies.