Liftmaster/Chamberlain/Sears/Craftsman garage door opener belt drive replacement trolley assembly 41B3869-1 for use in belt drive models manufactured 1984 to present.
41B3869-1 is an original manufacturers replacement part that is compatible with the following models:
1270, 1280, 1280R, 2280, 2580, 2500, 2500B, 2500D, 2585, 8100, 8100M, 8200, 9200, WD822K, WD912K, WD912KS, WD822KS - All compatible models may not be listed, if you have a Liftmaster, Chamberlain, Sears, Craftsman belt drive garage door opener model that is not listed please call us to confirm this is the right part for your opener.
