LiftMaster LA500 Primary Arm – 24VDC Replacement Linear Actuator (Arm Only)
The LiftMaster LA500 Primary Arm is the genuine OEM replacement linear actuator arm for LA500 single swing gate operators. This is the arm only — it does not include the control box, receiver, batteries, or safety sensors.
Ideal for replacing a failed or worn-out actuator on an existing LA500 system without buying a complete new operator kit. Saves significant time and cost for installers and property owners.
Key Features
- 24VDC linear actuator – smooth, quiet soft start/stop operation
- Designed specifically for LiftMaster LA500 gate systems
- Includes 6 ft pre-wired cable
- MyQ® compatible when paired with a compatible LA500 control board
- Heavy-duty construction for residential and light commercial use
- Commercial-duty performance for larger gates (up to 18 ft / 1,200 lbs)
What's Included
- LA500 Primary actuator arm
- 6 ft cable
Important: This is a replacement arm only. A working LA500 control box and receiver are required for operation.
Compatibility
Designed for:
- LiftMaster LA500 single swing gate operators
- LA500PKGUL / LA500PKGULMC complete operator kits
- Existing LA500 installations needing arm replacement
Note: For dual-gate systems you will need one primary arm (this model) + one secondary arm (LA500DCS).
Easy Installation & Manuals
Download LA500DC Installation Manual (PDF)
LiftMaster LA500 Error Codes & Troubleshooting
Quick reference for the most common diagnostic codes when troubleshooting the LA500 system:
| Code | Description / Solution |
|---|---|
| 31 | Control board failure – reboot or replace board |
| 32/33 | Linear drive disengaged – re-engage arm and check wiring |
| 34 | Absolute Position Encoder Error – check cable and reprogram limits |
| 35 | Max run time exceeded – check for obstruction and reprogram limits |
| 60 | Minimum monitored entrapment devices not installed |
| 91/92 | Force reversal – check for obstruction or mechanical binding |
| 93/94 | RPM / Stall reversal – check wiring and arm engagement |
| 99 | Normal operation |
Full error code list and detailed troubleshooting is in the official manual linked above.
Why Choose the LA500 Primary Replacement Arm?
- Cost-effective way to repair instead of replacing the entire operator
- Direct OEM fit – no modifications required
- Restores smooth, quiet, and powerful gate operation
- Ideal for service professionals and gate companies
- Extends the life of your existing LA500 system
Product Summary
LiftMaster LA500 Primary Arm – official 24VDC replacement linear actuator arm (arm only) for LA500 single swing gate operators. Includes 6 ft cable. MyQ compatible. The fastest and most economical way to repair a failed LA500 gate arm.
