Liftmaster LA412 Swing Gate Parts
LiftMaster LA412 Replacement Parts
Genuine LiftMaster replacement parts for the LA412 linear actuator swing gate operator — the 18 V solar-capable arm operator built for single or dual swing gates on sites without mains power at the gate. Use the diagram above to find the key number for the part you need, then click any part number in the tables below to go straight to that product.
Three LA412 generations, three different control boxes. This page is the original LA412 — identify it by the K001A6426-1 control board and the metal box.
LA412DC uses the K1D8052-1CC board in a plastic box; LA412U / LA412UL use the UL325 K1D8388-1CC board. All three share the same 18 V motor, release lever, rear connector and cable, but nothing in the control box interchanges.
The arms differ too: LA412 takes K-LA412, LA412DC takes LA412PKGUL, LA412U/UL take LA412UL.
The fuse is not a LiftMaster part. It is a standard 20 amp automotive blade fuse.
Common LA412 Repairs
| Symptom | Usual cause | Parts to check |
|---|---|---|
| Gate slows or stops working after a cloudy spell | Solar panel or battery not holding charge | SOLPNL10W12V solar panel and its battery |
| No response to remotes, wired controls work | Antenna or receiver module | K74-34392 antenna, K001A6636 receiver module |
| Operator completely dead | Blown 20 amp fuse or control board | K001A6426-1 control board |
| Gate will not reset after an obstruction | Reset switch | K23-19380 reset switch |
| No warning tone before the gate moves | Alarm failed | K76-19446 alarm |
| Arm hums but the gate does not move | Motor worn or arm seized | 041ASWG-0594SA motor, K-LA412 primary arm |
| Cannot release the gate by hand | Release lever or key | 041ASWG-0442SA lever, 041ASWG-0119 release keys |
| Intermittent operation, arm cuts out | Cable between box and arm | 041ASWG-0597SA 6 ft cable |
Standard Control Box
| Ref | Part # | Description |
|---|---|---|
| 1 | K001A6426-1 | Control Board, LA412 |
| 2 | K23-19380 | Reset Switch |
| 3 | K74-34392 | Antenna |
| 4 | K76-19446 | Alarm |
| — | K001A6636 | Control Board, Low Power RF, 315MHz |
| — | K001A6636-1 | Receiver Module, 390MHz — no longer available |
Gate Operator Arm
| Ref | Part # | Description |
|---|---|---|
| K1 | 041ASWG-0442SA | Release Lever |
| K2 | 041ASWG-0594SA | Motor, 18V |
| K3 | 041ASWG-0014SA | Rear Connector |
| K4 | K-LA412 | Primary Arm |
| K5 | 041ASWG-0597SA | Cable, 6 ft |
| K6 | SOLPNL10W12V | Solar Panel — no longer available |
| — | 041ASWG-0119 | Release Key, Qty 2 |
| — | K77-19130 | Hardware Kit, LA400 / LA412 |
| — | K77-19130-1 | Two Post Bracket Kit, LA400 / LA412 |