Description
LiftMaster Compound Sprocket 41B19x1-1/4″B | LIF-K75-11377
This is a replacement Compound Sprocket (41B19x1-1/4″B). Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
Genuine LiftMaster® replacement part.
Also known as
- LiftMaster 75-11377
- LiftMaster 15-11377
Compatibility
- This sprocket is compatible with LiftMaster Models MGJ and LGO Commercial Door Operators.



![LA400CONTUL Complete control box and circuit board for LA400DCU [LA400CONTULMC]](https://www.worktoolsmart.com/wp-content/uploads/2026/09/liftmaster-la400contul-complete-control-box-and-circuit-board-for-la400dcu-la400contulmc-la400contul__50052.1721406425.386.513.jpg)



![K171-B575 Brake Kit 575V w/Solenoid [K71-B575]](https://www.worktoolsmart.com/wp-content/uploads/2026/09/liftmaster-k1-71-b575-brake-kit-575v-wsolenoid-k71-b575-71-b575_b__08117.1724088160.386.513.jpg)

