LiftMaster T-Rail Trolley Assembly
LiftMaster T-Rail Trolley Assembly
LiftMaster 41A3489 T-Rail Trolley Assembly – Chain-Drive Garage Door Opener Replacement
The LiftMaster 41A3489 trolley assembly travels along the opener’s T-rail and connects the door arm to the chain-drive mechanism. Replacing a damaged or worn trolley restores this mechanical connection while retaining the compatible opener and rail.
Specifications
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Manufacturer part number: 041A3489
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Alternate manufacturer reference: 41A3489
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Store SKU: 41A348
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Component: T-rail trolley replacement assembly
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Drive application: Compatible chain-drive openers
Compatibility
Manufacturer-listed applications include compatible versions of LiftMaster 8160W, 8160WB, 81602, 8360W, 8365W-267, 81640 and 81650.
Confirm the installed rail and original trolley number, especially if the rail has previously been replaced. Square-rail and belt-drive assemblies require their own specified parts.
Additional Cross-References
LiftMaster lists legacy references including 1B1435, 41B3215, 41B2617, 1A955 and 41B2771. Confirm the complete application before using a legacy number to select a replacement.
Installation
Disconnect power and secure the door before servicing. Inspect the rail, chain and door-arm connection for wear or binding. After installation, verify trolley engagement, chain adjustment, door travel and safety reversal.
Details
Need Help With Compatibility?
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Shipping & Returns
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