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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: 321690463

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🔧Fits 1/3 & 1/2 HP chain drive models

⚙️Precision-engineered gear & sprocket

🛠️Complete installation tutorial 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 & ease!

DIY FRIENDLY - Step-by-step installation tutorial ensures quick, confident replacement
ALL IN ONE KIT - Includes gear, sprocket, worm gear, grease, and bearings for a hassle-free upgrade
DURABILITY ENGINEERED - High-quality components designed to extend your garage door opener’s lifespan
LIGHTWEIGHT COMPACT - 481g kit with easy-to-handle packaging for swift delivery and installation
SEAMLESS COMPATIBILITY - Perfectly fits Chamberlain, Sears, Craftsman & LiftMaster chain drive openers from 1984 to now

This TCK replacement gear and sprocket kit is engineered for 1/3 and 1/2 HP chain drive garage door openers by Chamberlain, Sears, Craftsman, and LiftMaster (1984-current). The kit includes all essential parts plus a detailed installation tutorial, ensuring a durable, seamless fit and easy DIY upgrade.

Specifications

Manufacturer	TCK TECH
Part number	54101-212542AT
Item Weight	481 g
Package Dimensions	15.39 x 11.61 x 11.51 cm; 481 g
Item model number	54101-212542AT
Size	1
Color	1
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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