Liftmaster LA412 LA412DC LA412U LA412UL Parts

LiftMaster LA412 linear actuator swing gate operator replacement parts diagram

LiftMaster LA412, LA412DC, LA412U & LA412UL Replacement Parts

Genuine LiftMaster replacement parts for all four LA412 linear actuator swing gate operators — the 12 V solar-capable arm operators built for single or dual swing gates on sites without mains power at the gate. The diagram and tables below cover the original LA412 control box and the arm parts shared by every generation. Control-box parts for the LA412DC, LA412U and LA412UL are in the product list further down this page.

Which LA412 do you have? Open the control box and read the part number on the board. Nothing in the control box interchanges between generations, so match the board before you order.

Model Control board Arm
LA412 K001A6426-1, metal box K-LA412
LA412DC K1D8052-1CC, plastic box LA412PKGUL
LA412U / LA412UL K1D8388-1CC, UL325 board LA412UL

Shared by all four: the 12 V motor, release lever, rear connector and cable in the arm table below.

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 (LA412), K1D8052-1CC (LA412DC) or K1D8388-1CC (LA412U/UL) 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

Original LA412 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 — All Generations

Ref Part # Description
K1 041ASWG-0442SA Release Lever
K2 041ASWG-0594SA Motor, 12V
K3 041ASWG-0014SA Rear Connector
K4 K-LA412 Primary Arm, original LA412 only
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
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