Replacement for Liftmaster 41c4220a Gear and Sprocket Kit fits Chamberlain, Sears, Craftsman 1/3 and 1/2 HP Chain Drive Models

Replacement for Liftmaster 41c4220a Gear and Sprocket Kit fits Chamberlain, Sears, Craftsman 1/3 and 1/2 HP Chain Drive Models

Q: 41ac050-1 will this work?

The part # you are giving is the main board. The sprocket does have a separate part#. You're better off getting the kit in case other parts are broken that you didn't know about. Anyway, the kit doesn't cost much more than just the sprocket. This is used in multiple door openers, very common.

Q: Does this work for model 139.54985

read on the website OR it fits Chamberlain, Sears, Craftsman 1/3 and 1/2 HP Chain Drive Models

Q: Will this kit work with a linear ldo50 garrage door opener?

No it won't Liftmaster/Chamberlain are different manufacturer than the LDO50 which is made by Linear

Q: I have this craftsman motor, and my gear assy is the same, but..mine is belt, not chain. can i just swap the sprocket out ?

I dont think you can the gear and sprocket is one assembly your top is for chain drive not belt it won't come apart from what I saw with my repair.

Product ID: 92620807

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🔧Fits multiple 1/3 & 1/2 HP chain drive models

⚙️Precision-engineered gear & sprocket

🛠️Complete installation kit included

Frequently Bought Together

Replacement for Liftmaster 41c4220a Gear and Sprocket Kit fits Chamberlain, Sears, Craftsman 1/3 and 1/2 HP Chain Drive Models

HIMARKLIF Upgrade Aluminum Alloy Drive and Worm Gear Kit Compatible with LiftMaster Craftsman Chamberlain Master Mechanic Garage Master Door Opener Access System Replace# 41A2817 41C4220 41C4220A

Drive Gear 81B0045 for Liftmaster Chamberlain Craftsman Sears Garage Door Opener 41A2817 41C4220A

Description

⚙️ Upgrade your garage game with precision power!

DURABLE BUILD - Crafted by GDR PRO for long-lasting performance under daily use
ALL IN ONE KIT - Includes gear, sprocket, worm gear, grease, and bearings for a hassle-free upgrade
LIGHTWEIGHT COMPACT - Just over 1 lb and fits easily in your toolkit or garage shelf
SEAMLESS COMPATIBILITY - Works flawlessly with Chamberlain, Sears, Craftsman & LiftMaster models from 1984 to today
STEP BY STEP INSTALLATION - Comes with a detailed tutorial to get you back on track fast

This GDR PRO replacement gear and sprocket kit is designed for 1/3 and 1/2 HP chain drive garage door openers from Chamberlain, Sears, Craftsman, and LiftMaster (1984-current). The kit includes all essential components—gear, sprocket, worm gear, grease, and bearings—plus an installation tutorial, ensuring a smooth, durable, and professional repair or upgrade.

Specifications

Manufacturer	GDR PRO
Part Number	54101-212542AT
Item Weight	1.06 pounds
Package Dimensions	6.06 x 4.57 x 4.53 inches
Item model number	54101-212542AT
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

41ac050-1 will this work?

Does this work for model 139.54985

Will this kit work with a linear ldo50 garrage door opener?

I have this craftsman motor, and my gear assy is the same, but..mine is belt, not chain. can i just swap the sprocket out ?

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