Futaba FUAS4149 servo gear set for BLS253 and BLS451 replacement gears  [FUAS4149]

FUTABA BLS253 BLS451 SERVO GEAR SET AS4149 EBS3345
Price:
CAD$29.47
Brand:
Futaba
Model:
FUAS4149
GTIN:
4513886304583
Condition:
Brand New
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Futaba gear replacement guide

This gear set is offered as a direct replacement for Futaba BLS253 and BLS451 servos, aligning with the part references shown in the product title. It restores mechanical engagement for servos showing gear wear and is suitable for routine service on RC cars, planes, and boats at their intended scale.

The listing highlights compatibility and swap expectations, and explains how replacing worn gears helps maintain consistent control feel. The kit references AS4149 and EBS3345 as associated part numbers; check those identifiers against your servo service parts list before ordering.

Specifications

  • Item: Servo gear set
  • Material: Not specified by manufacturer
  • Model Number: FUAS4149, AS4149, EBS3345
  • Compatibility: Futaba BLS253, BLS451

Carry a matched gear set for field fixes and planned maintenance, and confirm part numbers and spline alignment before you refit the gearbox.

How do I confirm this fits my BLS253 or BLS451 during teardown?

Open the servo and compare the internal gear shapes and spline count to the replacement set; the listing matches common Futaba BLS253 and BLS451 gear layouts but physically verifying fit before full reassembly is recommended.

Does the package include bearings, shims, or only gears?

The product references specify gear part numbers only; materials and extra internals are not listed, so expect primarily gears and check the seller listing for any additional components.

What steps should I follow when replacing the gears?

Remove the case, note gear order and orientation, replace worn gears one at a time, then rotate the train manually to ensure smooth mesh before reinstalling the case and testing under low load.

Are the AS4149 and EBS3345 numbers the same as OEM part codes?

Those numbers are listed as the model references accompanying FUAS4149; treat them as reference identifiers and verify OEM status with your vendor if official origin matters to you.

Will swapping gears change servo calibration or end points?

Mechanical replacement restores gear mesh and reduces backlash but does not alter radio settings; confirm mechanical centering and then check endpoints and subtrim in your transmitter after reassembly.

Any quick tips to avoid misalignment when reassembling?

Align spline marks, ensure gears sit flush on shafts, and hand-drive the gear train through several rotations to feel for binding before powering the servo.

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