LiftMaster Sprocket Kit, 42 Tooth, 1.25"X1/4"K | LIF-71-1550B42QGH secura key This LiftMaster 041D9491 is a

This LiftMaster 041D9491 is a Craftsman® End Panel and Logic Board Replacement Kit

DC45AH - 4

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It ensures the rear cover fits tightly

LiftMaster Sprocket Kit, 42 Tooth, 1.25"X1/4"K | LIF-71-1550B42QGH secura key This LiftMaster 041D9491 is aLiftMaster Sprocket Kit, 42 Tooth, 1. 25"X1 4"K LIF 71 1550B42QGH 71 1550B42QGH is a 42 Tooth Sprocket Kit (1. 25" Bore x 1 4" Keyway), for #50 chain. For use as a door sprocket and compatible with LiftMaster MAXUM Standard and Extended Duty JDC JHDC, and Logic 4. 0 5. 0 Commercial Door Operators. Kit includes shaft key. Genuine LiftMaster replacement part.