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Parts for the
SM465 Transmission

SM465 Transmission

The SM465 is arguably one of the greatest four-speed transmissions ever built, and reconditioning one is a worthwhile project.

The Kit
Our master rebuild kit has been assembled for our customer's rebuilds as well as our own. It is the most complete kit we've seen anywhere and features all the consumable and wear item components.

The kit is compatible with nearly all years (1968-1987) of the 465 and with all styles, including 4wd, 2wd and with Novak style shafts. Customers with 1988-1991 aluminum top cover versions should contact us directly for these kits.

It is recommended that you use the supplied shaft bushings with the supplied thrust washer for simplicity of the rebuild and standardization.

Rebuild Requirements
It is very common for our customers to do top-level rebuild work, using good methods and by following our included instruction guide.

We suggest the rebuilder have access to a set of snap ring pliers, a bearing puller and a hydraulic press.

 

SM465 Transmission Rebuild Kit

Kit, master rebuild, SM465 (1968-1987 versions)
Part: #465MR
Weight: 11 lbs.
Price: $189.00
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Notes: All bearings, synchronizer rings, journal bushings, snap rings, thrust washers, seals, gaskets and instruction guide

Other Components
Essentially all parts for the SM465, including gears, shafts, factory adapters & tailhousings, retainers, etc. are available new and affordably so. Our parts ordering module is provided below. For anything not shown, contact us.

 

SM465 Diagram

Click on any item description in blue below to expand its details for purchase. You can use your browser's Back button to return to this page and your cart items will remain.

For your reference, all asterixed * items below are included in our master rebuild kit, above.

Items indicated with a "" are not available singly, but are included in the Small Parts Kit, #A below.

Kit, small parts, SM465 transmission
Part: #SP304-50
Weight: 2.5 lbs.
Price: $25.50
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Notes: SM465 small parts kit. Includes snap rings, slinger, input-to-mainshaft pilot roller bearings, thrust washers (kit has aftermarket style rear thrust washer - this is compatible when used with our #B465 bushing kit with all years of SM465 transmission)
Bushings, 1st, 2nd & 3rd gear, SM465 transmission, '68-'77 OE mainshafts & all Novak mainshafts
Part: #B465
Weight: 3 lbs.
Price: $27.87
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Notes: Bushings, 1st, 2nd & 3rd gears, SM465 transmission, '68-'77 OE mainshafts & all Novak mainshafts. This kit is included with our #465MR master rebuild kit. Note that these bushings are compatible with '78-'91 transmissions when using the earlier style thrust washer included in our small parts kit.
Retainer, front bearing, SM465, 5-1/8" register. For 1-1/8" input shafts (common). Includes oil seal
Part: #3901178
Weight: 2.2 lbs.
Price: $22.46
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Notes: This is the retainer used for standard duty SM465 input shafts. It is by far the very most common version.

Retainer, front bearing, SM465, 5-1/8" register. For 1-1/2" input shafts (rare). Includes oil seal
Part: #3905403
Weight: 2.2 lbs.
Price: $27.98
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Notes: This is the retainer used for heavy duty SM465 input shafts. It is by far the least common version.
Gasket set, SM465 transmission
Part: #WT304-55
Weight: 0.25 lbs.
Price: $9.84
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Notes: Includes top cover, front retainer, rear tailhousing and PTO gaskets. This kit is also included in our SM465 Master Rebuild kit, #465MR
Seal, oil
Part: #1213N
Weight: .044 lbs.
Price: $5.34
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4. Ring, retaining, front input shaft to bearing *
5. Ring, retaining, front input bearing to case *
Bearing, deep groove ball, front input, SM465 transmission 1968~1990, .68" wide. Includes the external retaining ring
Part: #907993
Weight: 1 lbs.
Price: $57.80
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Notes: Check the width of your bearing to verify interchange. GM offered early and late styles concurrently

Bearing, deep groove ball, front input, SM465 transmission, ~1988-1991, .83" wide. Includes the external retaining ring
Part: #WT304-61
Weight: 1 lbs.
Price: $33.38
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Notes: Check the width of your bearing to verify interchange. GM offered early and late styles concurrently
7. Shield or slinger, front input *
Shaft, input, SM465 transmission, 1-1/8" x 10 splines x 10.69" OAL, 1968-1990 with standard .68" bearing journal. L17-S26(33)T
Part: #WT304-16A
Weight: 5 lbs.
Price: $76.20
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Notes: This is the standard duty input shaft that is by far the very most common version.

Shaft, input, SM465 transmission, 1-1/2" x 10 splines x 9.63" OAL, 1968-1990, HD, version with standard .68" bearing. L17-S26(33)T
Part: #WT304-16
Weight: 5 lbs.
Price: $86.61
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Notes: This is the heavy duty input shaft in various HD and industrial applications

Shaft, input, SM465 transmission, 1-1/8" x 10 splines x 10.69" OAL, 1988-1991 with wide .83" bearing journal. L17-S26(33)T
Part: #WT304-16C
Weight: 5 lbs.
Price: $111.40
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Notes: This is an uncommon, late version input shaft. We recommend you check your bearing width to order the correct interchange.

Shaft, input, SM465 transmission, 1-1/2" x 10 splines x 9.63" OAL, 1988-1991, HD version with wide .83" bearing. L17-S26(33)T
Part: #WT304-16B
Weight: 5 lbs.
Price: $83.82
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Notes: This is the heavy duty input shaft in various HD and industrial applications
9. Ring, clip, input shaft to mainshaft pilot rollers *
10. Bearings, needle rollers *
Ring, synchronizer, 3rd-4th gear, SM465 transmission
Part: #WT304-14A
Weight: 0.3 lbs.
Price: $8.92
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Notes: Supercedes WT304-14
Slider, clutch, 3rd-4th synchronizer, SM465 transmission. S33T
Part: #WT304-15
Weight: .38 lbs.
Price: $25.69
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Notes: Updated torque-lock design. Also available in the #WT304-11AX 3rd gear update kit
13. Ring, clip, input shaft to mainshaft pilot rollers *
Kit, synchronizer keys & springs, 3rd-4th, SM465 transmission
Part: #WT304-K3
Weight: 0.06 lbs.
Price: $7.26
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Notes: Keys may also be called "pawls, dogs, struts, etc."
Hub, synchronizer, 3rd-4th, SM465 transmission, S33-S33T
Part: #WT304-2.5
Weight: 2 lbs.
Price: $39.10
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Kit, synchronizer keys & springs, 3rd-4th, SM465 transmission
Part: #WT304-K3
Weight: 0.06 lbs.
Price: $7.26
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Notes: Keys may also be called "pawls, dogs, struts, etc."
Kit, synchronizer keys & springs, 3rd-4th, SM465 transmission
Part: #WT304-K3
Weight: 0.06 lbs.
Price: $7.26
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Notes: Keys may also be called "pawls, dogs, struts, etc."
Assembly, synchronizer, SM465, 3rd & 4th gear. Includes hub, slider, synchro rings, keys & springs
Part: #AWT304-2.5
Weight: 1.93 lbs.
Price: $74.50
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Ring, synchronizer, 3rd-4th gear, SM465 transmission
Part: #WT304-14A
Weight: 0.3 lbs.
Price: $8.92
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Notes: Supercedes WT304-14
Gear, 3rd, SM465. L26-S33T. GM #3901161
Part: #WT304-11
Weight: 3 lbs.
Price: $43.58
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Notes: Also available in our #WT304-11AX update kit, which is indicated for transmissions with the unlikely but possible tendency to pop out of 3rd gear

Kit, update, 3rd gear and slider, SM465 transmission. TorqueLock / Anti-jump-out design
Part: #WT304-11AX
Weight: 5.23 lbs.
Price: $93.53
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Notes: This kit is indicated for transmissions with the unlikely but possible tendency to pop out of 3rd gear. It is a good upgrade to make when rebuilding a 465
Bushing, 3rd gear mainshaft journal, 1968-1991, SM465 transmission
Part: #WT304-19A
Weight: .364 lbs.
Price: $9.55
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22. Washer, thrust *
Gear, 2nd, SM465 transmission. L35-S36T
Part: #WT304-21
Weight: 7.692 lbs.
Price: $59.70
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Ring, synchronizer, 2nd gear, SM465 transmission
Part: #WT304-83A
Weight: 0.73 lbs.
Price: $12.13
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Bushing, mainshaft journal, 1st gear (1968-1977) & 2nd gear journals (all years), SM465 transmission
Part: #WT304-19
Weight: 0.584 lbs.
Price: $9.55
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Notes: Applicable to 2nd gear for all versions of SM465. Applicable to 1st gear for '68-'77 only when using factory 1st gear thrust washer - or - aftermarket thrust washer (as provided in Novak Master Rebuild or small parts kits).
Shaft, main, SM465 transmission, S33-46-35 spline, 2wd, 1968-1991. 15.69" OAL
Part: #WT304-2A
Weight: 9 lbs.
Price: $103.74
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Shaft, main, SM465 transmission. S33-46-10 spline, 4wd, 1968-1978, 13.75" OAL
Part: #WT304-2C
Weight: 10 lbs.
Price: $114.95
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Notes: This style shaft persisted until 1983 in some models

Shaft, main, SM465 transmission, S33-46-32 spline, 4wd, 1978-1991. 19.63" OAL
Part: #WT304-2D
Weight: 12 lbs.
Price: $124.83
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Kit, synchronizer keys & springs, 1st-2nd, SM465 transmission
Part: #WT304-K1
Weight: .08 lbs.
Price: $7.48
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Notes: Keys may also be called "pawls, dogs, struts, etc.". This item is also included in our #465MR Master Rebuild kit
Hub, synchronizer, 1st-2nd, SM465 transmission
Part: #WT304-81
Weight: 4.07 lbs.
Price: $77.52
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Kit, synchronizer keys & springs, 1st-2nd, SM465 transmission
Part: #WT304-K1
Weight: .08 lbs.
Price: $7.48
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Notes: Keys may also be called "pawls, dogs, struts, etc.". This item is also included in our #465MR Master Rebuild kit
Gear, reverse / sliding clutch, SM465 transmission. S44-S36T
Part: #WT304-36
Weight: 4 lbs.
Price: $93.06
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Kit, synchronizer keys & springs, 1st-2nd, SM465 transmission
Part: #WT304-K1
Weight: .08 lbs.
Price: $7.48
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Notes: Keys may also be called "pawls, dogs, struts, etc.". This item is also included in our #465MR Master Rebuild kit
Assembly, synchronizer, 1st-2nd gears, SM465 transmission. Includes hub, slider, synchro rings, keys & springs
Part: #AWT304-80
Weight: 9.952 lbs.
Price: $166.76
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Bushing, mainshaft journal, 1st gear (1968-1977) & 2nd gear journals (all years), SM465 transmission
Part: #WT304-19
Weight: 0.584 lbs.
Price: $9.55
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Notes: Applicable to 2nd gear for all versions of SM465. Applicable to 1st gear for '68-'77 only when using factory 1st gear thrust washer - or - aftermarket thrust washer (as provided in Novak Master Rebuild or small parts kits).

Bushing, mainshaft journal, 1st gear (1978-1991), SM465 transmission
Part: #WT304-19B
Weight: 0.298 lbs.
Price: $10.71
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Notes: For use only when replacing identical bushing from 1978-1991 transmissions and using the factory 1st gear thrust washer instead of the aftermarket, step style thrust washer
34. Pins, 1st gear
Gear, 1st, SM465 transmission. L39-S36T
Part: #WT304-12A
Weight: 4.446 lbs.
Price: $82.26
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36. Washer, thrust, improved aftermarket version*
Bearing, deep groove ball, single row, with external retaining ring groove
Part: #6308N
Weight: 1.364 lbs.
Price: $15.70
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38. Ring, retaining, rear output bearing to case *
39. Ring, retaining, mainshaft to rear output bearing*
Bearing, countershaft, front, SM465, 1968-1987
Part: #5707
Weight: 0.388 lbs.
Price: $14.40
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Bearing, countershaft, front, SM465, 1988-1991
Part: #JH14070
Weight: .3 lbs.
Price: $15.88
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41. Ring, retaining, countershaft front bearing *
42. Washer, spacer, countershaft front
Gear, countershaft drive, SM465 transmission. R40-S21T
Part: #AWT304-9A
Weight: 7.668 lbs.
Price: $61.00
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44. Washer, countershaft spacing *
45. Ring, retaining, countershaft spacing *
46. Ring, retaining, countershaft spacing *
Spacer, bushing, countershaft, SM465
Part: #WT304-91
Weight: .602 lbs.
Price: $5.85
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Notes: This later design replaces earlier snap rings and washer
Gear, 3rd, countershaft, SM465 transmission. R36-S44T
Part: #WT304-34
Weight: 4 lbs.
Price: $74.58
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Shaft, counter / cluster, SM465 transmission, R23-S17-R14T. Earlier, 1.33" front bearing journal
Part: #WT304-3
Weight: 7 lbs.
Price: $169.20
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Notes: We recommend the customer check their journal diameter prior to ordering, easily done by removing the front lower cover

Shaft, counter / cluster, SM465 transmission, R23-S17-R14T, later 1.4" diameter front bearing journal
Part: #WT304-3A
Weight: 8 lbs.
Price: $115.43
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Notes: We recommend the customer check their journal diameter prior to ordering, easily done by removing the front lower cover
Bearing, deep groove ball, single row, with external retaining ring groove
Part: #6308N
Weight: 1.364 lbs.
Price: $15.70
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51. Ring, retaining, countershaft rear bearing to case *
52. Ring, retaining, countershaft rear bearing to shaft *
Gear, reverse idler, SM465 transmission. Includes bushing
Part: #AWT304-10
Weight: 3.176 lbs.
Price: $42.24
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Shaft, idler, reverse, SM465 transmission
Part: #WT304-35
Weight: 1.6 lbs.
Price: $26.25
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Cover, PTO port, six bolt
Part: #T53-160B
Weight: .5 lbs.
Price: $7.38
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Gasket, PTO cover, six bolt
Part: #T9150
Weight: 0.05 lbs.
Price: $1.87
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57. Screw, countershaft front bearing cover plate
58. Plate, countershaft front bearing cover
Gasket set, SM465 transmission
Part: #WT304-55
Weight: 0.25 lbs.
Price: $9.84
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Notes: Includes top cover, front retainer, rear tailhousing and PTO gaskets. This kit is also included in our SM465 Master Rebuild kit, #465MR
60. Plug, drain
61. Plug, filler
Gasket set, SM465 transmission
Part: #WT304-55
Weight: 0.25 lbs.
Price: $9.84
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Notes: Includes top cover, front retainer, rear tailhousing and PTO gaskets. This kit is also included in our SM465 Master Rebuild kit, #465MR
Gasket, rear output housing, SM465 transmission
Part: #10148
Weight: .005 lbs.
Price: $3.54
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64. Bolt, PTO cover plate