LiftMaster Straight Door Arm | LIF-4178B0034B
This is a Straight Door Arm Replacement Kit. For use with various LiftMaster® and Chamberlain® Garage Door Openers. The straight arm is commonly paired with the curved door arm. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
Refer to the following part # for the Curved Door Arm Replacement Kit: 041B0035B
Genuine LiftMaster® replacement part.
Also known as
- LiftMaster 012385041783
- LiftMaster 178B33
- LiftMaster 178B34