41B3869-1 & 41B3869-3 Complete Trolley Assembly Replacement for LiftMaster and Chamberlain Brand Garage Door Openers Models 1270 1280 1280R 2280 2580 2500, Replaces 041B3869-3A 41B3869 41B3869-3A

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• Replacement for LiftMaster Trolley Assembly: Directly replaces part numbers 041B3869-3A, 41B3869-1, 41B3869-3, 41B3869, and 41B3869-3A for a hassle-free garage door opener trolley assembly installation.
• Fit for LiftMaster & Chamberlain Models: This garage door openers 41B3869-1 replacement part works seamlessly with belt drive opener models including 1270, 1280, 1280R, 2280, 2580, 2500, 2500B, 2500D, 2585, 8100, 8100M, 8200, 9200, WD822K, WD922K, WD912K, WD912KS, WD822KS, and more.
• Heavy-Duty Metal Construction: Crafted from premium wear-resistant alloy, this garage door openers 41B3869-1 trolley assembly withstands strong impacts and repeated use without fatigue.
• Advanced Rust Protection: Specially treated to resist corrosion, making it ideal for humid climates or outdoor garage door systems year after year.
• Smooth & Reliable Performance: Precision-engineered to minimize friction between the trolley and rail, ensuring long-lasting, consistent operation.