Craftsman 139.53664SRT2

Craftsman 139.53664SRT2 Belt Drive Garage Door Opener Parts

How to use this page. Find the part on the diagram, match its number to the Ref column in the table under it, and click the part number to order. The Rail, Safety Sensor and Wall Control sections further down each have their own diagram. Model number 139.53664SRT2 is on the label on the back or side of the motor unit. Not sure which part failed? Call (866) 965-5599.

Motor Unit Parts — Craftsman 139.53664SRT2

Craftsman 139.53664SRT2 garage door opener parts diagram

Ref	Part Number	Description	Price
02	41A4885-2	41A4885-2 gear and sprocket assy [041A4885-2]	$86.28
03	41A2817	Liftmaster 041A2817 gear kit [041A2817]	$33.19
04	41B4245	Liftmaster 041B4245-1 Line cord 6' [041B4245-1]	$21.48
05	41A3589-1	41A3589-1 Full belt assembly - 8' tall door 1 [041A3589-1]	$171.87
08	4A1344	Liftmaster 4A1344 light socket [041C0279]	$21.34
11	12A373	12A373 Capacitor bracket [K012A0373]	$9.69
12	41D3150	41D3150 AC Terminal block sev assembly	$14.64
13	41C4842	41C4842 Universal replacement motor [041C4842]	$232.43
15	041A2818	041A2818 Limit switch drive & retainer	$24.10
16	041D3452	041D3452 Limit switch assembly	$42.05
—	041A2822A	041A2822A Interrupter Cup	$17.24
—	041A4371	041A4371 belt cap retainer	$14.97
—	41A3589-2	Craftsman 41A3589-2 Garage Door Opener Belt - 10 ft Door	$183.50
—	41A3589-3	Craftsman 41A3589-3 Garage Door Opener Belt - 7 ft Door	$152.64

No longer available (listed so you can confirm the number and find the replacement):

Ref	Part Number	Description
05	41C4876	41C4876 Wire harness [NO LONGER AVAILABLE]
10	30B363	30B363 Capacitor - 1/2 HP [NO LONGER AVAILABLE]

Belt Drive Rail Parts

Rail, trolley, belt and door-arm parts shared by Craftsman belt drive openers. Belts and chains are sold by door height — measure the door. Full page: Craftsman belt drive rail parts.

Craftsman belt drive rail assembly parts diagram

Ref (rail)	Part Number	Description	Price
01	004A1008	Liftmaster 004A1008 Master link kit	$14.97
02	041B5424	Liftmaster 041B5424 Belt pulley bracket (2500, 2580, 2280, 3280, 3500D)	$29.76
02	41A3588-1	Liftmaster 041A3588-1 Belt pulley bracket (1270, 1280, 1280R) [041a3588-1]	$34.85
03	41B3869-1	Liftmaster 41B3869-1 Complete trolley assembly [041B3869-3A]	$62.95
04	109B33	109B33 Trolley belt clip [K109B0033]	$5.41
06	41B4103	Liftmaster 41B4103 tensioner [041B4103]	$14.97
07	83A11-2	Liftmaster 83A11-2 Rail grease	$11.34
16	178B35	178B35 curved door arm [041B0035B]	$20.53
17	178B34	178B34 Straight door arm section [4178B0034B]	$24.08
—	041A5250-1	Craftsman 041A5250-1 Garage Door Opener Belt - 8 ft Door	$163.68
—	041A5250-2	Craftsman 041A5250-2 Garage Door Opener Belt - 10 ft Door	$166.03
—	041A8094	041A8094 Door Arm Kit	$89.67
—	041B5669	041B5669 Belt clip & link	$17.58
—	2770BD	2770BD Belt drive rail assembly 10 foot [G2770]	$394.95
—	2777BD	LiftMaster 2777BD (G2777) 7 ft Belt Drive Rail Assembly - Belt, Trolley and Rail for 6580L, 6690L, 84501, 84504R, 84505R, 87504-267, 8550W, 8557W	$97.78
—	2778BD	Belt drive rail assembly 8 foot [G2778]	$275.14
—	29B129	29B129 Belt connector (used for splicing the 41a3589 series belts) [K029B0129]	$6.57
—	29B130	29B130 Belt connector (used for splicing the belt) [K029B0130]	$12.15
—	41A5250	Craftsman 041A5250 Garage Door Opener Belt - 7 ft Door	$152.64

Safety Sensor Eyes & Brackets

Door will not close and the light blinks? That is the sensors. The original 41A5034 / 041-0136 kit is replaced by the 041-0365-000 sensor eyes and brackets kit for 1997-and-newer openers; 041A5281-1 extension brackets replace the discontinued 12B484 / 12B485. Full page: Craftsman safety sensors.

Craftsman safety sensor eyes and brackets diagram

Ref (sensor)	Part Number	Description	Price
06	41B4494-1	Liftmaster 41B4494-1 2-Conductor bell wire 26 feet	$21.30
—	041-0155-000	Liftmaster 041-0155-000 Safety Sensor Brackets, 2021 To Present	$23.16
—	041-0365-000	LiftMaster 041-0365-000 Safety Sensor Eyes & Brackets Kit - Replaces 41A5034	$48.97
—	041A5281-1	041A5281-1 Liftmaster Extension Brackets	$23.17
—	41A2770-6	41A2770-6 Installation Hardware kit for openers [041A2770-17]	$37.85
—	41B873	41B873 Liftmaster I.R. Bracket Sunblocker [041B0873]	$32.51
—	Sensor Guards (sensors not included)	Sensor Guards (sensors not included)	$33.06

No longer available (listed so you can confirm the number and find the replacement):

Ref (sensor)	Part Number	Description
S5	41A5034	41A5034 safety sensor kit used on 1997-current units REPLACED by 041-0136
S6	41A5266-1	41A5266-1 sensor mounting bracket [NO LONGER AVAILABLE]
—	12B484	12B484 Square holed mounting bracket DISCONTINUED USE 41A5281
—	12B485	12B485 Slotted mounting bracket DISCONTINUED USE 41A5281

Remotes, Wall Controls & Installation Parts

The 893MAX universal remote replaces the discontinued Craftsman 139.53680, 139.53859 and 139.53879 remotes and works with every Craftsman opener made since 1993. Keypads and other remotes: Craftsman remotes. Wall buttons: openers built before 1998 take the 041C0494-2 control panel; 1998-and-newer openers take the 889LM. Door arms, brackets, bell wire, release rope and batteries: Craftsman wall controls and installation parts.

Craftsman openers are built by Chamberlain, so parts carry Chamberlain/LiftMaster numbers and may be printed with or without a leading zero (41A2817 = 041A2817). Wrong model? See all Craftsman models by number.