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.

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

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

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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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

Product ID: 321690463

🔧Fits 1/3 & 1/2 HP chain drive models

⚙️Precision-engineered gear & sprocket

🛠️Complete installation tutorial included

฿5827

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

Description

⚙️ Upgrade your garage game with precision and ease!

DIY FRIENDLY - Step-by-step installation tutorial ensures quick, confident setup without a pro
ALL IN ONE KIT - Includes gear, sprocket, worm gear, grease, and bearings for a hassle-free replacement
DURABLE PERFORMANCE - High-quality materials engineered to extend the life of your garage door opener
TRUSTED BY THOUSANDS - Rated 4.7 stars by over 7,800 users who upgraded their garage door reliability
SEAMLESS COMPATIBILITY - Works flawlessly with Chamberlain, Sears, Craftsman & LiftMaster chain drive openers (1984-current)

The TCK TECH Replacement Gear and Sprocket Kit is a comprehensive, durable solution designed for 1/3 and 1/2 HP chain drive garage door openers from LiftMaster, Chamberlain, Sears, and Craftsman (models from 1984 to present). This kit includes all essential components plus a detailed installation tutorial, making it the go-to choice for professionals and DIY enthusiasts aiming to restore smooth, reliable garage door operation.

Specifications

ASIN	B07H4XYNPS
ASIN	B07H4XYNPS
Batteries Included?	No
Batteries Required?	No
Color	1
Customer Reviews	4.7 4.7 out of 5 stars (7,874)
Customer reviews	4.7 4.7 out of 5 stars (7,874)
Date First Available	3 October 2018
Date First Available	3 October 2018
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	481 g
Item model number	54101-212542AT
Item model number	54101-212542AT
Manufacturer	TCK TECH
Manufacturer	TCK TECH
Package Dimensions	15.39 x 11.61 x 11.51 cm; 481 g
Package Dimensions	15.39 x 11.61 x 11.51 cm; 481 g
Part number	54101-212542AT
Size	1

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

฿5827

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews