Acvoce Gear & Sprocket Replacement Kit for LiftMaster 41C4220A – 1/3 to 1/2 HP Chain Drive

Overview

Introducing the Acvoce Gear & Sprocket Replacement Kit for LiftMaster 41C4220A (41A2827). This OEM kit brings together the essential components you need to refresh a worn chain-drive opener without guesswork. The set includes a gear and sprocket, worm gear, grease, motor shaft bearings, and sprocket bearings — carefully chosen for compatibility and reliable performance.

Designed for 1/3 and 1/2 HP chain-drive models, it covers Chamberlain, Sears, Craftsman, and LiftMaster openers produced from 1984 to today. You’ll notice how the kit’s parts align with the original geometry, reducing the risk of misfit components and saving time during maintenance.

One notable design detail is that the spur gear is mounted on the new output shaft, which can simplify installation by eliminating the need to disassemble the entire output shaft assembly. This means less downtime and a cleaner rebuild process when you’re restoring an aging garage door system.

What’s Included

• Gear and sprocket
• Worm gear
• Grease
• Motor shaft bearings
• Sprocket bearings

Compatibility at a Glance

The kit works with chain-drive Chamberlain, Sears, Craftsman, and LiftMaster operators from 1984 to present. It’s compatible with 1/3 and 1/2 HP models and is suitable for manufacturers within the same family of chain-drive openers.

Why Choose This OEM Kit

• Precise OEM fit for reliable performance
• Spur gear mounted on the new output shaft for easier install
• Includes step-by-step instructions and free tech support
• Durable components designed for regular garage-door operation
• Grease and bearings included to reduce friction and wear

Real-Life Use Scenarios

• Restoring an aging opener showing gear wear or chatter
• Replacing worn teeth during routine maintenance to prevent sagging operation
• Rebuilding a chain-drive system to restore smooth, quiet operation

If you’re unsure whether this is the right item for your model, use the store page “Ask a question.” Our team will help you verify compatibility, and if needed, we’ll work with you to find a suitable solution. A well-timed replacement kit can help maintain consistent door performance and minimize downtime.