Mack's Standard Transmission Inc.
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Bearing Rebuild Kits:
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Munce SM465

Bearing (Rebuild) Kit:
  Application Year Notes Kit # w/Synchros
GM        
  SM465 4sp, 1st Design "Iron" Top Cover
68-on
2 PTO Openings, 12" overall Case Length. UsesN1211L, B55-59 or 211MG1 Input Bearing, 0.68" thick. BK129A is a Complete Kit, minus small parts.
BK129 BK129A
BK129WS BK129AWS
NOTE: NOT ALL 1988 AND NEWER SM465 TRANSMISSIONS USE A BK129L PLEASE ASK BEARING NUMBER OR GET A MEASUREMENT ON LATER MODEL UNITS. 0.68" THICK IS COMMON, AND 0.83" THICK IS LATE MODEL AND RARE.

Countershaft (Cluster):
REF # Part # Description
3 WT304-3 SM465 Cluster Gear 1.33 Front C/S Brng.
3 WT304-3A SM465 Cluster Gear 1.4 Front C/S Brng.


Input Shaft:
REF # Part # Description
16 WT304-16 SM465 Input Shaft 17t, 1 1/2" clutch splines
16 WT304-16A SM465 Input Shaft 17t, 1 1/16" clutch splines
16 WT304-16C SM465 Input Shaft 88-On use w/TM211 brng.


Main Shaft:
REF # Part # Description
2 AWT304-2C SM465 Mainshaft, 4x4 10 splines
2 WT304-2A SM465 Mainshaft, 2wd 35 splines
2 WT304-2A SM465 Mainshaft, 4x4 31 splines


Hubs & Sleeves (sliders):
REF # Part # Description
43 AWT304-2.5 SM465 3-4 Synchro Assembly
41 AWT304-80 SM465 1-2 Synchro Assembly
43 WT304-15 SM465 3-4 Slider
41 WT304-81 SM465 1-2 Synchro Hub
41 WT304-36 SM465 1-2/Reverse Slider s44t
43 WT304-2.5 SM465 3-4 Synchro Hub

Synchros:
REF # Part # Description
14 WT304-14A SM465 3-4 Synchro Ring
  WT304-83A SM465 2nd Gear Synchro Ring


Shift Forks:
REF # Part # Description
  WT304-23 SM465 1-2 Fork
  WT304-23A SM465 3-4 Fork
  WT304-23B SM465 Reverse Fork


Bearings:
REF # Part # Description
     


Bearing Retainers:
REF # Part # Description
6 AWT304-6 SM465 Bearing Retainer 1 1/16" Shaft
6 AWT304-6A SM465 Bearing Retainer 1 1/2" Shaft

Key / Spring / Ball Kit:
REF # Part # Description
  WT304-K1 SM465 1-2 Key/Spring Kit
  WT304-K3 SM465 3-4 Key/Spring Kit
  WT304-40 SM465 Heavy Duty Top Cover Spring
  3978731 SM465 Reverse Plunger Spring


Gears 1-R:
REF # Part # Description
9 AWT304-9A SM465 Counter Shaft 4th Gear 40t
10 AWT304-10 SM465 Idler Gear 23t
11 WT304-11 SM465 3rd Gear 26t
11 WT304-11AX SM465 Updated 3rd Gear and 3-4 Slider
12 AWT304-12 SM465 1st Gear 39t
21 WT304-21 SM465 2nd Gear 35t
34 WT304-34 SM465 Counter Shaft 3rd Gear 36t
  WT304-11AX SM465 Updated 3rd Gear and 3-4 Slider

Miscelaneous Parts :
REF # Part # Description
6259656 SM465 4x4 Output Sleeve Coupler, 4 1/4"
6263040 SM465 4x4 Output Sleeve Coupler, 4 3/4"
B8T7220D SM465 Shifter Retainer
SP304-50 SM465 Small Parts Kit
SP304-50Y SM465 Top Cover Small Parts Kit
WT304-28 SM465 Cast Iron Topcover Shifter Stick
  WT304-19 SM465 1st, 2nd Gear Bushing
  WT304-19B SM465 1st Gear Bushing, 78-On
  WT3040-19 SM465 1st, 2nd Gear Bushing
  335366 SM465 Lock Washer
  12388448 SM465 4x4 Nut
77 WT304-90 SM465 Mainshaft Nut
  WT304-91 SM465 Updated Counter Shaft Spacer
  WT304-19A SM465 3rd Gear Bushing
  3864968 SM465 Reverse Plunger
  3727182 SM465 Reverse Clips
  623-024 SM465 Top Cover Roll Pin