Mack's Standard Transmission Inc.
Transmission ID:
Aisin
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Exchange Units

Bearing Rebuild Kits:
Transmissions
Transfer Cases
Front & Rear Axles


Parts:
Bearings
Seals
Synchronizers
Main Shafts
Input Shafts
Counter Shafts
Gears
Bearing Retainers
Shift Forks
Shift Rails
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Clutch Kits
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Aisin AX5

Bearing (Rebuild) Kit:
  Application Year Notes Kit # w/Synchros
Jeep        

Jeep 5sp, 2WD, 4x4

84-87 Toyota Design AX4 and AX5. Can use two different Input Bearings. BK160Auses a B32-14UR or 32BC08S1N. BK161A uses a 32TM03 or 32BCS4-2
BK160A BK161A
BK160AWS BK161AWS
  Jeep 5sp, 2WD, 4x4
87-on
Late AX5 uses Snap Ring on end of Counter Gear instead of a nut. Uses same Input Bearing as BK161A. Rear M/S and Rear C/S Bearings change.
BK161LA BK161LAWS

Countershaft (Cluster):
REF # Part # Description
8 AX5-8 AX5 Cluster, Uses Nut, 84-86
8 AX5-8A AX5 Cluster, Uses Snap Ring, 87-On
  83500572 AX5 Cluster Nut


Input Shaft:
REF # Part # Description
16 AX5-16 AX5 Input, Uses Thin Bearing, Early, 84
16 AX5-16A AX5 Input, Uses Thick Bearing, 85-86
16 AX5-16B AX5 Input, Uses Thick Bearing, 87-On


Main Shaft:
REF # Part # Description
2 83500559 AX5 M/S, 4x4, 84-86
2 83503105 AX5 M/S, 4x4, 87-On


Hubs & Sleeves (sliders):
REF # Part # Description
41 83500561 AX5 1-2 Inner Hub
41 83500555 AX5 1-2 Slider
43 83500562 AX5 3-4 Inner Hub
43 33364-35010 AX5 3-4 Slider (Iron Fork)
43 4740236 AX5 3-4 Slider Kit (Includes Aluminum Fork)
45 4746657 AX5 5th Slider (Uses Aluminum Fork)
45 83500642 AX5 5th Slider (Uses Iron Fork)

Synchros:
REF # Part # Description
14 TOY-14 AX5 3-4-5 Synchro Ring
14a TOY-14A AX5 1-2 Synchro Ring
  83506024 AX5 5th Synchro Cone


Shift Forks:
REF # Part # Description
  83500527 AX5 1-2 Shift Fork Kit (Replaces Iron Fork)
  83502662 AX5 1-2 Fork, Aluminum
  4740236 AX5 3-4 Fork Kit (Includes Slider) Aluminum
  4746656 AX5 5th Fork, Late, Aluminum
  83500637 AX5 5th Gear Fork, Iron


Bearings:
REF # Part # Description
51 83500578 AX5 1st Gear Needle, 84-86
51 83506031 AX5 1st Gear Needle, Late, 87-On
51 83500560 AX5 1st Gear Inner Race
51 83506026 AX5 1st Gear Race, Late
52 83500577 AX5 2nd Gear Needle
53 83500576 AX5 3rd Gear Needle
55 K26/33/33.5 AX5 5th Gear Needle


Bearing Retainers:
REF # Part # Description
6 83502685 AX5 Front Retainer, Early
6 83503112 AX5 Front Retainer, Late, Flat Style
6 83500508 AX5 Rear Retainer, 84-87
6 83506034 AX5 Rear Retainer, 88-On

Key / Spring / Ball Kit:
REF # Part # Description
  83500569 AX5 1-2 Shift Spring
  83500568 AX5 3-4-5 Shift Spring
  83500564 AX5 1-2 Shift Key
  83500641 AX5 5th Shift Key
  83506029 AX5 3-4 Shift Key


Gears 1-R:
REF # Part # Description
12 83500550 AX5 1st Gear, 33t, 84-86
12 83506017 AX5 1st Gear, 33t, 87-On
21 83500551 AX5 2nd Gear, 28t, 84-86
21 83506018 AX5 2nd Gear, 28t, 87-On
11 83506019 AX5 3rd Gear, 27t
18,19 G52-5 AX5 5th Gear Set, 24/25t
10 83503555 AX5 Reverse Idler Gear

Miscelaneous Parts :
REF # Part # Description
  11615 AX5 Front Seal
  83506223 AX5 Adapter Housing, 88-91 6cyl Cherokee
  83506224 AX5 Adapter Housing, 88-91 6cyl Cherokee
  4864226X AX5 Shift Seat, Plastic
83500519 AX5 Shifter Bushing (end of stick)
SPG52-50 AX5 Small Parts Kit