Model T4

Borg-Warner 4-Speed Transmission

Borg-Warner T4 4-speed transmission. Numbered callouts match the table below.

Item numbers match the diagram. Each part number searches Amazon for that Crown part.

Item #DescriptionCommentsPart No.
1 Gear, Reverse Idler   J8134038
2 Shaft, Reverse Idler   J8134039*
3 Bearing, Cluster Gear Front J8134033*
4 Thrust Washer, Cluster Gear Front J8134032
5 Cluster Gear
 
37-34-23-15-14 Teeth
37-32-23-15-14 Teeth
J8134031*
83500970
6 Cluster Gear Kit Incl. 27T 3rd Gear and Cluster Gear 83500970K
7 Spacer, Cluster Gear Bearing   J8134035
8 Bearing, Cluster Gear Rear J8134036
9 Bearing, Cluster Gear Needle Thrust Bearing J8134034
10 Race, Cluster Gear Thrust   J8134037
11 Seal, Output   J8132672
12 Switch, Back Up Lamp   J8134068
13 Retainer, Bearing Front J8134013
14 Seal, Input   J8132779
15 Shim Set, Input Bearing   J8134016
16 Bearing, Input Shaft Front J8134015
17 Shaft, Input
 
10 Spline
14 Spline
83500975
83500968
18 Bearing, Input Shaft Needle Bearing; 15 Required J8127397
19 Bearing, Thrust   J8134018
20 Washer, Thrust Bearing   J8134170
21 Gear, 3rd
 
29 Teeth
27 Teeth
83500285
83500380
22 Snap Ring, Main Shaft   J8127424
23 Washer, Thrust   J8134025
24 Gear, 2nd   J8134024*
25 Main Shaft Assembly
 
w/o Needle Roller 1st Gear
w/ Needle Roller 1st Gear
83501166
83500963*
26 Blocking Ring Set 1st and 2nd; Includes 2 Rings J8127403
27 Plate, Synchronizer 2nd Gear; 3 Required J8127401
28 Spring, Synchronizer 4 Required J8134021
29 Slider 1st and Reverse 1351070002
30 Needle Bearing, 1st Gear 84/86 83500969
31 Gear, 1st
 
Used w/o Needle Rollers
Used w/ Needle Rollers
83501103*
83500965*
32 Washer, Thrust   83500964
33 Bearing, Output Shaft   J8134030
34 Synchronizer Assembly 3rd and 4th 83510192*
35 Blocking Ring Set 3rd and 4th; Includes 2 Rings J8134058
36 Plate, Synchronizer
 
3rd and 4th; Late Style, 3 Required
3rd and 4th; Early Style, 3 Required
83510193
J8127418
37 Plug, Shift Rail   J8127473
38 Insert, Shift Fork   J8133418
39 Fork, Shift 3rd and 4th J8134048
40 Fork, Shift 1st and 2nd J8134049*
41 Boot, Shifter   J8134064
42 Sleeve, Shifter   83502930
43 Pin, Shift Lever   J8134040
44 Ball, Chrome   453593
45 Insert, Shift Knob   J3241067
46 Knob, Shift   J3241062
47 Nut, Shift Control   J4006495
48 Boot, Shifter   J5752010
49 Clip, Shift Lever   J3241239
50 Isolator, Shift Lever   J3241481
51 Shift Knob Kit   3241067K
52 RTV Silicone Sealant   J8993317
53 Gasket and Seal Kit Includes Front and Rear Seals and RTV T4T5GS
54 Small Parts Kit Includes Bearings, Pins, Snap Rings, Shims, Plugs and Spacers T450
55 Master Small Parts Kit Includes #s 27, 28, 36, 54 T450MK
56 Master Overhaul Kit Includes #s 26, 27, 28, 35, 36, 57 T4MASKIT
57 Master Bearing Kit Includes Bearings, Seals, and Small Parts Kit BKT4M

Note: Early Style Synchronizer Plates Do Not Have Wings

Late Style Synchronizer Plates Have 2 Wings Per Plate

* Not Currently Available