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

FUTABA BLS253 BLS451 SERVO GEAR SET AS4149 EBS3345
Price:
USD$21.20
Brand:
Futaba
Model:
FUAS4149
GTIN:
4513886304583
Condition:
Brand New
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Futaba servo gear replacement overview

This gear set is presented as a direct replacement kit intended for use with Futaba BLS253 and BLS451 servos, matching the part references shown in the product title. It is designed to restore mechanical engagement when internal servo gears show wear or damage, and to support routine maintenance of RC servos in model cars, planes, and boats at scale-appropriate applications.

The article focuses on compatibility, what to expect during a swap, and how this kit contributes to tuning reliability. The kit listing includes model references AS4149 and EBS3345 which are cited by the manufacturer as the associated part identifiers; confirm those references against your servo's service parts list before purchase.

Specifications

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

Keep a matched gear set on hand for field repairs and scheduled checks, and verify part numbers against your servo before replacing components to ensure correct fit and spline alignment.

Is this gear set compatible with both BLS253 and BLS451 servos?

The product listing specifies compatibility with Futaba BLS253 and BLS451 servos, matching the model references in the title.

Does the kit include bearings or other internal parts beyond gears?

The manufacturer references list gear part numbers only, materials and full kit contents are not specified, so verify the product listing for included components.

What are common signs that the servo gears need replacement?

Typical indicators include increased free play, grinding noises, or loss of precise movement in the servo; these suggest worn or damaged gears requiring replacement.

Are these parts OEM from Futaba or aftermarket?

The listing presents manufacturer part references AS4149 and EBS3345 alongside the FUAS4149 model number; treat those as the reference identifiers and confirm OEM status with the seller if that detail is critical.

Will replacing gears affect servo tuning or calibration?

Replacing worn gears restores mechanical precision but does not change electronic tuning; after replacement, verify mechanical centering and then confirm control response with your existing radio setup.

Any tips for ensuring correct gear alignment during reassembly?

Align splines carefully, restore proper mesh without excessive preload, and rotate the gear train by hand to confirm smooth engagement before powering the servo.

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