GMC Trucks 1991, K2500 Pickup Sierra 4WD, Transmission Manual M/T genuine OEM parts

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Spring, 4-speed manual transmission (m20, control housing)

OEM part number: 00551946
Reverse shift lever detent ball

$?

Shaft, 4-speed manual transmission (m20, control housing)

OEM part number: 08672013

$?

Spring, 4-speed manual transmission (m20, control housing)

OEM part number: 00551946
Third & fourth shift lever detent ball

$?

Shaft, 4-speed manual transmission (m20, control housing)

OEM part number: 08672012

$?

Ventilation, 4-speed manual transmission (m20, control housing)

OEM part number: 08652580
Trans

$?

Pinion, 4-speed manual transmission (m20, control housing)

OEM part number: 09416325
Spring transmission shift tower (2 required)

$?

Pinion, 4-speed manual transmission (m20, control housing)

OEM part number: 12338111
Spring (3/16x1 1/8, stainless steel plain) (type a)

$1.38—2.48

Available in 38 shops

Gasket, 4-speed manual transmission (m20, control housing)

OEM part number: 03929530

$?

Switch, 4-speed manual transmission (m20, control housing)

OEM part number: 14014559
Back up switch

$14.07—15.67

Available in 38 shops

Transmission, 5-speed manual transmission (mt8, assembly)

OEM part number: 15691901
Complete (k1, 2, 3)

$?

Transmission, 5-speed manual transmission (mt8, assembly)

OEM part number: 15691902
Complete (c1, 2, 309) (c310, 314 with c7a, c7e)

$?

Transmission, 5-speed manual transmission (mt8, assembly)

OEM part number: 15691903
Complete (c310, 314 except c7a, c7e) (c318 with c5b)

$?

Lever, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15637305
Gear shift stub

$?

Boot, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15662923
Control lever

$?

Cap, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15637307
Master control housing

$?

Seat, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 02458324
Control lever spring

$?

Spring, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15636798
Manual transmission control lever

$?

Plug, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 09421743

$?

Screw, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 09442300
, hexagon with washer 5/16-18 x 1 po

$?

Pinion, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635315
Cover (diameter 468, len .485) (2 required)

$5.24—6.31

Available in 38 shops

Cover, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12548459
Trans

$?

Pinion, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 02462229

$?

Pinion, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 02462226
Fifth shift fork (shift rod interlock (5 required))

$?

Fork, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15661449

$?

Padding, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12382866
Shift fork side (6 required)

$5.64—6.31

Available in 2 shops

Padding, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635277
Shift fork center (3 required)

$?

Fork, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15637303

$?

Plug, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15637304
Automatic square hd. pipe (3/4x14 steel zp)

$5.64—6.31

Available in 2 shops

Extension, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635333
Trans (c310, 314 with c5b) (c318)

$478.58—538.53

Available in 38 shops

Spacer, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635332
Vehicle speed sensor

$107.33—123.44

Available in 38 shops

Bearing, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12547173
Rear oil seal retainer

$16.39—29.49

Available in 38 shops

Ring, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635283
Main shaft rear bearing retain

$2.44—5.80

Available in 38 shops

Seal, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 88958818
Extension oil

$32.86—59.12

Available in 38 shops

Extension, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635280
Trans (c1, 2, 309) (c310, 314 with c7a, c7e)

$?

Seal, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12478060
Extension oil

$8.01—9.63

Available in 38 shops

Yoke, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635286

$?

Washer, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12382783
Mainshaft nut

$2.72—2.86

Available in 2 shops

Nut, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15535364
Mainshaft

$283.41

Available in 1 shop

Extension, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12546147
Trans (k model)

$253.11—435.90

Available in 38 shops

Balancer, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635329
Propeller shaft

$308.19—530.47

Available in 38 shops

Washer, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635326
Mainshaft nut (1.52x2.2x.17) (no longer req'd)

$3.67—4.05

Available in 2 shops

Nut, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12377811
Mainshaft (1.5-18x.52.24)

$16.39—29.49

Available in 38 shops

Bolt, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635285
Retainer (m10x1.5x333.2, 27.5) (8 required)

$2.12—2.49

Available in 38 shops

Pinion, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635284
Trans case location (2 required)

$2.72—3.00

Available in 2 shops

Pinion, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 00273937
Spring, 1/8x1 1/4, steel, zinc coated

$?

Luggage, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635200
Overdrive

$31.05—34.77

Available in 2 shops

Bolt, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635311
Reverse inhibitor cam (2 required)

$0.69

Available in 1 shop

Rail, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635303
Overdrive & reverse

$?

Poppet, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635314
Shift fork & bar (3 required)

$?

Spring, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635313
Shift rod poppet ball (3 required)

$?

Plug, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15619131
Shift bar housing expansion (7/8 odx5/64 thick) (3 required)

$1.21—2.08

Available in 37 shops

Bolt, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 11515755
Hexagon with conical washer (m8x1.25x16, 9.8 pzor)

$2.86—4.27

Available in 38 shops

Sensor, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 12382860
Speed (includes "o" ring)

$43.57—51.32

Available in 38 shops

Gasket, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 03929530
Back-up lamp switch

$?

Switch, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 14014559
Back-up lamp

$14.07—15.67

Available in 38 shops

Plug, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15637304

$5.64—6.31

Available in 2 shops

Pipe, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 89059625
Ventilation

$5.69—7.12

Available in 38 shops

Boot, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15662923
Manual transmission control lever

$?

Nut, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 23049525
Hexagon jam (m16x1.5x8, 4t, plain, left-hand thread)

$4.30

Available in 1 shop

Washer, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15635289
Trans (mainshaft)

$3.85—4.91

Available in 38 shops

Fork, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15664808

$?

Luggage, 5-speed manual transmission (mt8, case and cover section)

OEM part number: 15664807

$?

Wheel, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635279
Speedometer drive magnetic

$?

Gear, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635278
Mainshaft overdrive

$?

Bearing, 5-speed manual transmission (mt8, main gear section)

OEM part number: 09418223
Mainshaft rear

$?

Washer, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635252
Reverse gear thrust (flat 1.88x3.5x.27)

$13.66—15.08

Available in 2 shops

Gear, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637292
Mainshaft reverse speed

$?

Sleeve, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637291
Reverse shift shaft detent spring

$107.87—126.24

Available in 38 shops

Bearing, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12382905
Reverse gear

$33.47—37.47

Available in 2 shops

Spacer, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12382815
Mainshaft gear

$5.63—6.21

Available in 2 shops

Ring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 14037974
Clutch gear retaining (np 15207)

$5.20—8.89

Available in 38 shops

Hub, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12547203
First & reverse reversible revision revised revolution(s) gear clutch

$?

Bearing, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12549371
Trans gear

$32.86—36.79

Available in 2 shops

Gear, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637279
Mainshaft first speed

$359.58—404.62

Available in 2 shops

Shaft, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12382817
Main (c with mt8) (use together with 12546679 tone wheel)

$?

Shaft, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12382819
Main (c with c5b) (also use 12546679 tone wheel)

$465.01—523.27

Available in 2 shops

Shaft, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12382861
Main (k)

$423.49—474.16

Available in 38 shops

Pinion, 5-speed manual transmission (mt8, main gear section)

OEM part number: 09431704
Thrust washer retaining

$?

Ring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635217
Mainshaft bearing retainer (4 required)

$5.64—6.31

Available in 2 shops

Spring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637278
Second speed inhibitor (c310, 314 & c5b, c318)

$?

Ring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635216
Mainshaft synchronizer (inner) (2 required)

$49.14—55.77

Available in 38 shops

Ring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635219
Mainshaft synchronizer (middle) (2 required)

$31.63—35.40

Available in 2 shops

Ring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637274
Mainshaft synchronizer (outer) (2 required)

$31.91—35.74

Available in 38 shops

Spring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637277
First & second gear synchronizer

$?

Spring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637912
Synchronizer (4 required)

$2.50—4.61

Available in 38 shops

Strut, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637285
Trans third & fourth gear synchronizer (4 required)

$5.64—6.31

Available in 38 shops

Block, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635224
Synchronizer (4 required)

$?

Sleeve, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637276
First & second gear synchronizer

$?

Gear, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637281
Mainshaft second speed (ck1, 2, 3)

$332.73—372.55

Available in 2 shops

Washer, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635232
Third gear thrust flat (1.9x3.28x.188)

$8.55—9.57

Available in 38 shops

Ring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15635233
Third gear retaining

$5.58—6.24

Available in 2 shops

Spacer, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12382814
Mainshaft gear bearing

$2.81—3.09

Available in 2 shops

Gear, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12547205
Mainshaft third speed

$?

Bearing, 5-speed manual transmission (mt8, main gear section)

OEM part number: 12549372
Third speed gear (2 required)

$16.39—18.36

Available in 2 shops

Ring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 89058652
Trans syn retain

$20.28—52.74

Available in 38 shops

Hub, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637287
Synchronizer sliding clutch

$?

Spring, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637912
Gear synchronizer

$2.50—4.61

Available in 38 shops

Strut, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637275
Trans first & second gear synchronizer

$?

Sleeve, 5-speed manual transmission (mt8, main gear section)

OEM part number: 15637287
Mainshaft gear

$?

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