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See below list of repair parts for the Liftmaster RSW12U.  This unit
started production January of 2016 to meet the new UL325 safety
requirements which include a mandatory monitored safety device.
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K1D8389-1CC Control Board RSW12U & RSL12U 01 K1D8389-1CC Control Board RSW12V & RSL12V

K1D8389-1CC Control Board used for 2016 and on Liftmaster
RSL12U/RSW12U AND CSW24U/CSL24U
units. Backwards compatible for older second generation DC units bit will require monitored safety edge or safety eyes.
Note: When upgrading older CSL24V and CSW24V units use upgrade kit K76-38252
which includes this board,expansion board and wire harness.

Product Price: $241.33
K13-34729 Dust Guard 03 K13-34729 Dust Guard

Dust Guard

Product Price: $11.83
K32-34656-1 Gear Reducer Top, 30:1 06 K32-34656-1 Gear Reducer Top, 30:1

Gear Reducer Top, 30:1

Product Price: $327.11
29-NP712 Battery, 12V 7AH 29-NP712 Battery, 12V 7AH (1 battery)

Battery Yuasa NP 7-12  
12V 7AH  (1 battery)

Product Price: $20.99

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APOW3 APOW3 transformer 24 vac

Transformer Plug in 24 vac now california energy compliant 34volt direct replacement

Product Price: $24.41

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Chain 41 Chain 41

Chain #41 - Drive chain sold in 10' lengths only

Product Price: $21.06 per 10 foot length

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Liftmaster K10-36395 Battery Tray K10-36395 Battery Tray

Liftmaster K10-36395 Battery Tray

Product Price: $28.17
K13-36117-1 Cludge Cover K13-36117-1 Cludge Cover

K13-36117-1 Cludge Cover

Product Price: $15.32
Liftmaster K180A0357 Reset Switch K180A0357 Reset Switch

Liftmaster K180A0357 Reset Switch

Product Price: $21.18
Liftmaster K1A6408 APE Assembly w/plastic tray, RPM board w/mounting hardware K1A6408 APE Assembly w/plastic tray, RPM board w/mounting hardware

Liftmaster K1A6408 APE Assembly w/plastic tray, RPM board w/mounting hardware

Product Price: $22.62
K1D8388-1CC Control Board K1D8388-1CC Control Board

K1D8388-1CC Control Board used for 2016 and on Liftmaster La400U and La500U
units. Backwards compatible for older second generation DC units bit will require monitored safety edge or safety eyes.

Product Price: $241.33
K70-35678-1 Sprocket Kit K2 K70-35678-1 Sprocket Kit

Sprocket Kit
does not include chain which is sold separately under part number k19-41043M

Product Price: $29.17
K32-36513-1 Gear Reducer (bottom) K32-36513-1 Gear Reducer (bottom)

K32-36513-1 Gear Reducer (bottom)

Product Price: $182.62
K73-36109-1 Chassis K73-36109-1 Chassis

K73-36109-1 Chassis

Product Price: $222.26
Liftmaster K75-36260 Lock & Keys K75-36260 Lock & Keys

Liftmaster K75-36260 Lock & Keys

Product Price: $17.11
Liftmaster K76-34644 APS Encoder w/cable K76-34644 APS Encoder w/cable

Liftmaster K76-34644 APS Encoder w/cable

Product Price: $143.50
K76-37016 Receptacle Assembly 120V K76-37016 Receptacle Assembly 120V

K76-37016 Receptacle Assembly 120V

Product Price: $22.45
Liftmaster K77-36539 Output Shaft w/sprocket, #35 limit chain, & APS sprocket roll pin K77-36539 Output Shaft w/sprocket

Liftmaster K77-36539 Output Shaft w/sprocket, #35 limit chain, & APS sprocket roll pin

Product Price: $70.92
Liftmaster K77-36541 Antenna K77-36541 Liftmaster Antenna

Liftmaster K77-36541 Antenna

Product Price: $17.19
K77-37334 Motor 1/8 H.P., 12 Vdc K77-37334 Motor 1/8 H.P., 12 Vdc

K77-37334 Motor 1/8 H.P., 12 Vdc

Product Price: $108.32
K77-37335 Electrical Box K77-37335 Electrical Box

K77-37335 Electrical Box

Product Price: $65.45
K77-37854 Operator Cover for RSW12U with labels, keys and lock assembly K77-37854 Operator Cover for RSW12U

K77-37854 Operator Cover for RSW12U with labels, keys and lock assembly

Product Price: $204.52
K77-37856 Operator Cover for RSW12U Front Cover (gray) K77-37856 Operator Cover for RSW12U Front Cover (gray)

K77-37856 Operator Cover for RSW12U Front Cover (gray)

Product Price: $204.52
Liftmaster K94-35152 Stand alone alarm with harness K94-35152 Stand alone alarm with harness

Stand alone alarm with harness. Can be used in conjunction with on board relays to create gate pre-warning sound or sound while gate is in motions. Compatible with models CSL24V, CSW24V, LA500-CONT, LA500CONTXLM.

Product Price: $31.59
Liftmaster K94-36596 Battery Harness (for 33AH batteries) K94-36596 Battery Harness (for 33AH batteries)

Battery Harness K94-36596

Product Price: $34.53

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K94-37230 Battery Harness (for 7AH batteries) K94-37230 Battery Harness (for 7AH batteries)

K94-37230 Battery Harness (for 7AH batteries)

Product Price: $8.62
K94-37336 Wiring Harness with product ID assembly K94-37336 Wiring Harness with product ID assembly

K94-37336 Wiring Harness with product ID assembly

Product Price: $23.44
Q059 Q059 output arm solid K09-50119

Output Arm Solid

Product Price: $28.20

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Q061 Q061 output shaft cludge (T) assembly K75-50121

Cludge Assembly

Product Price: $72.04

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Q103 Q103 Swivel Arm Assembly K75-50292

Swivel Arm Assy

Product Price: $114.53

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Q104 Q104 standard arm assembly 75-50293

Q104 Standard arm assembly

Product Price: $63.83

(1)
Q118 Q118 key for access door K80-50295

Key for access door

Product Price: $4.99

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If you have an Liftmaster RSW12U and need parts you have come to the right place. We stock all of the major replacement parts for the Liftmaster RSW12U swing gate operator. We have a Liftmaster RSW12U parts breakdown that you shows you an exploded breakdown view you can clearly identify the parts you need and order it online from our store. This has been one of the best gate operators on the market for several years, we can help you keep it running even longer.