Liftmaster LA412U & LA412UL Swing Gate Parts
LiftMaster LA412U & LA412UL Replacement Parts
Genuine LiftMaster replacement parts for the LA412U and LA412UL linear actuator swing gate operators — the UL325-listed generation of the LA412, running the K1D8388-1CC main board with battery and solar capability. 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.
U or UL? The control box is the one part that differs. LA412U takes K74-36798-6; LA412UL takes K74-39307-3. Everything else on this page fits both.
Three LA412 generations. This page is the UL325 model with the K1D8388-1CC board. The LA412DC uses K1D8052-1CC and the original LA412 uses K001A6426-1 in a metal box.
The arm is LA412UL on this generation — LA412DC takes LA412PKGUL, LA412 takes K-LA412. Not interchangeable.
Metal box option: K74-36806-5 is the solar metal box for this model. Do not confuse it with K74-36806-1, which is the LA412DC metal box.
Common LA412U Repairs
| Symptom | Usual cause | Parts to check |
|---|---|---|
| Gate runs slowly or dies after a cloudy spell | Battery not holding charge | 29-NP712 battery, K94-36891 battery harness |
| Operator completely dead | Main board or battery connection | K1D8388-1CC main board, K94-36891 harness |
| No response to remotes, wired controls work | Antenna | K77-36541 antenna |
| Gate will not reset after an obstruction | Reset switch | K94-36408-3 reset switch |
| No warning tone before the gate moves | Piezo alarm failed | K94-36411 piezo alarm |
| Arm hums but the gate does not move | Motor worn or arm seized | 041ASWG-0594SA motor, LA412UL arm |
| Cannot release the gate by hand | Release lever or key | 041ASWG-0442SA lever, 041ASWG-0119 release keys |
| Needs monitored entrapment protection | Upgrade to current UL325 requirements | K1D8388-1CCU upgrade kit with eyes |
Standard Control Box
| Ref | Part # | Description |
|---|---|---|
| 1 | K74-36798-6 | Control Box, Plastic — LA412U |
| 1 | K74-39307-3 | Control Box, Plastic — LA412UL |
| 1 | LA412CONTUL | Standard 12VDC Control Box |
| 2 | K94-36408-3 | Reset Switch, LA412 |
| 3 | K94-36411 | Piezo Alarm |
| 4 | K75-36635 | Control Board Mounting Bracket |
| 5 | K1D8388-1CC | Main Board, Linear Actuators, UL325 |
| 6 | 29-NP712 | Battery, 12V, 7AH |
| 7 | SOLPNL10W12V | Solar Panel — no longer available |
| — | K1D8388-1CCU | Upgrade Kit with Eyes, LA, UL325 |
| — | K74-36806-5 | Solar Control Box, Metal |
| — | K94-36891 | Battery Wire Harness, 7AH, LA412 |
| — | K77-36541 | Antenna |
Gate Operator Arm
| Ref | Part # | Description |
|---|---|---|
| 8 | 041ASWG-0442SA | Release Lever |
| 9 | 041ASWG-0594SA | Motor, 18V |
| 10 | 041ASWG-0014SA | Rear Connector |
| 11 | LA412UL | Single Arm |
| 12 | 041ASWG-0597SA | Cable, 6 ft |
| — | 041ASWG-0119 | Release Key, Qty 2 |
| — | K77-19130 | Hardware Kit, LA400 / LA412 |
| — | K77-19130-1 | Two Post Bracket Kit, LA400 / LA412 |