×
Contact Us Live Chat or 1-888-737-9766
My Garage
My Account
Cart
Search Bar
Search by Part Number, Part Name, or Vehicle
Track Order Help Center

Manual Transmission fit your 1991 GMC K2500

Currently shopping for
1991 GMC K2500
Change Vehicle
Categories Close X

Currently selected

Transmission - Manual

Other Categories

Body Mounting, Air Conditioning, Audio/Entertainment
Brakes
Brakes, Rear Axle, Propeller Shaft, Wheels, Tires
Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers
Cooling System, Grille, Oil System
Engine
Frames, Springs, Shocks, Bumpers, Fascias
Front Axle, Front Suspension, Steering
Front End Sheet Metal, Heater
Fuel System, Exhaust, Emission System
Maintenance Parts, Fluids, Capacities, Electrical Connectors
Rear Body Structure, Moldings & Trim, Cargo Stowage
Starter, Generator, Ignition, Electrical, Lamps
Transfer Case
Transmission - Automatic
Categories Close X

Currently selected

Transmission - Manual

Other Categories

Body Mounting, Air Conditioning, Audio/Entertainment
Brakes
Brakes, Rear Axle, Propeller Shaft, Wheels, Tires
Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers
Cooling System, Grille, Oil System
Engine
Frames, Springs, Shocks, Bumpers, Fascias
Front Axle, Front Suspension, Steering
Front End Sheet Metal, Heater
Fuel System, Exhaust, Emission System
Maintenance Parts, Fluids, Capacities, Electrical Connectors
Rear Body Structure, Moldings & Trim, Cargo Stowage
Starter, Generator, Ignition, Electrical, Lamps
Transfer Case
Transmission - Automatic
Parts Questions
Sort by:
Recommended
Part No. & Part Description
Price & Qty.
Part No. &
Part Description
  • COVER, Power Take Off Assembly-Transfer Case
    GMC 12547312
    GMC 12547312
    12547312
    COVER, POWER TAKE OFF (2 REQUIRED)
    $17.07 $10.31
    1
    Add To Cart
  • GMC 12547312
    GMC 12547312
    12547312
    COVER, POWER TAKE-OFF (2 REQUIRED)
    $17.07 $10.31
    1
    Add To Cart
  • GASKET, Transmission Main Drive Gear Bearing Retainer
    12337932
    GASKET, MAIN DRIVE GEAR BEARING RETAINER(*KIT1,KIT2)
  • GMC 8672162
    8672162
    GASKET, COUNTER GEAR FRONT BEARING CAP(*KIT1)
  • PIN, Transmission Internal Shift
    GMC 2462229
    2462229
    PIN, SHIFT ROD INTERLOCK
  • GMC 2462226
    2462226
    PIN, 5TH SHIFT FORK(SHIFT ROD INTERLOCK (5 REQUIRED))(*KIT1,KIT2)
  • GMC 2462226
    2462226
    PIN, 5TH SHIFT FORK(OVERDRIVE SHIFT ROD)
  • GMC 3901139
    3901139
    PIN, SHIFT INTERLOCK (.185X.63)
  • HUB, Transmission Synchronizer
    GMC 3901164
    3901164
    HUB, 3RD & 4TH SPEED CLUTCH
    $135.23 $49.28
    1
    Add To Cart
  • GMC 12547203
    12547203
    HUB, 1ST & REV GEAR CLUTCH
  • GMC 3946776
    3946776
    HUB, 1ST & 2ND SPEED CLUTCH
  • BUSHING, Transmission Shift Shaft Detent
    GMC 23049803
    GMC 23049803
    23049803
    BUSHING, SHIFT SHAFT DETENT(5TH & REVERSE DETENT (ALSO PART OF 200)(2 REQUIRED)
  • GMC 23049803
    GMC 23049803
    23049803
    BUSHING, SHIFT SHAFT DETENT(ALSO PART OF 200)(2 REQUIRED)
  • SEAL, Transmission Main Drive
    GMC 23049814
    23049814
    SEAL, INPUT SHAFT OIL(*KIT1)
    $12.01
    1
    Add To Cart
  • GMC 12386077
    12386077
    SEAL, MAIN DRIVE GEAR BEARING CAP(ALSO PART OF 59)
    $4.06 $2.58
    1
    Add To Cart
  • GMC 3987937
    3987937
    SEAL, MAIN DRIVE GEAR BEARING OIL(*KIT1,KIT2)
  • MAGNET, Transmission Case
    GMC 24239049
    24239049
    MAGNET, CASE CHIP CARRIER
    $12.11 $7.68
    1
    Add To Cart
  • GMC 12471607
    GMC 12471607
    12471607
    MAGNET, CHIP COLLECTOR
    $13.57 $8.63
    1
    Add To Cart
  • SEAL, Transmission Extension
    GMC 15595878
    15595878
    SEAL, U JOINT FRONT FLANGE(MANUAL TRANSMISSION(M20))(*KIT1)
    $16.90 $12.60
    1
    Add To Cart
  • GMC 88958818
    88958818
    SEAL, EXTENSION OIL
    $59.12 $35.72
    1
    Add To Cart
  • GMC 23049636
    GMC 23049636
    23049636
    SEAL, OUTPUT SHAFT OIL(*KIT1)
  • TRANSMISSION KIT, Transmission Overhaul
    8672987
    TRANSMISSION KIT, MANUAL(SERVICE OVERHAUL)(1990-91)(INCLUDE 2,5-7,11,16,22-24,29-31,33,34,38,41-44,46-48,55,65)
    $418.97 $262.69
    1
    Add To Cart
  • 8672987
    TRANSMISSION KIT, MANUAL(SERVICE OVERHAUL)(1988-89)(INCLUDE 2,5-7,16,22-24,29-31,33,34,38,41-44,46-48,55,65)
    $418.97 $262.69
    1
    Add To Cart
  • 8672952
    TRANSMISSION KIT, MANUAL (INCLUDE 120,122,209,320,323,324)(*01)
  • 8672952
    TRANSMISSION KIT, MANUAL (INCLUDE 6,9,10,40,42,52)(*01)
  • WASHER, Transmission Countershaft Gear
    GMC 15635262
    15635262
    WASHER, COUNTERSHAFT THRUST (FLAT, 1.58X2.66X.35)
    $43.44 $34.11
    1
    Add To Cart
  • GMC 12337982
    12337982
    WASHER, CLUTCH COUNTER GEAR RETAINING (1.940X.00X.111)(*KIT2)
  • GMC 3901153
    3901153
    WASHER, COUNTER GEAR THRUST(*KIT2)
  • WASHER, Transmission Rear Bearing & Mainshaft
    GMC 12382783
    12382783
    WASHER, MAINSHAFT NUT
    $3.58
    1
    Add To Cart
  • GMC 15635326
    15635326
    WASHER, MAINSHAFT NUT (1.52X2.2X.17)(NO LONGER REQ'D)
  • GMC 335366
    335366
    WASHER, MAIN SHAFT BEARING LOCK(*KIT2)
  • PAD, Transmission Internal Shift Fork
    GMC 12382866
    12382866
    PAD, SHIFT FORK SIDE (6 REQUIRED)
    $3.76 $2.39
    1
    Add To Cart
  • GMC 15635277
    15635277
    PAD, SHIFT FORK CENTER (3 REQUIRED)
  • GEAR, Transmission Main Drive(Clutch)
    GMC 12386535
    12386535
    GEAR, MAIN DRIVE CLUTCH DIG
    $31.09 $23.92
    1
    Add To Cart
  • GMC 12547204
    12547204
    GEAR, OVERDRIVE CLUTCH
  • 8672408
    GEAR, TRANS CLUTCH(17 TEETH)(1988-89,1990 1ST DESIGN)(MUST ALSO USE 08672405 BEARING & DISCARD OIL SLINGER)
  • 8672408
    GEAR, MAIN DRIVE (17 TEETH)(1990 2ND DESIGN,1991)(*01)
  • SHAFT, Transmission Internal Shift Shaft
    GMC 12548394
    12548394
    SHAFT, 5TH SHIFT LUGGAGE & FORK
    $37.86 $24.06
    1
    Add To Cart
  • 8672013
    SHAFT, 3RD & 4TH SHIFT FORK
  • 8672119
    SHAFT, 1ST & 2ND SHIFT(INCLUDE 101,102,105)
  • GMC 8672260
    8672260
    SHAFT, 3RD & 4TH SHIFT(1989 2ND DESIGN W/0KDU,1990-91)(INCLUDE 107,108,109)
  • GMC 8672260
    8672260
    SHAFT, 3RD & 4TH SHIFT(1988,1989 1ST DESIGN W/9KDU)(INCLUDE 107,108,109)
  • 8672310
    SHAFT, SHIFT(PART OF 116)(MG5)
  • 8672310
    SHAFT, SHIFT (INCLUDE 117,119,121)
  • PIN, Transmission Shift Shaft Detent
    GMC 15590194
    15590194
    PIN, SHIFT FORK DETENT (AS REQUIRED)
    $12.60
    1
    Add To Cart
  • GMC 9416325
    9416325
    PIN, SPRING TRANS SHIFT TOWER (2 REQUIRED)
  • WHEEL, Speedometer Drive
    23046538
    WHEEL, VEHICLE SPEED SENSOR RELUCTOR
    $53.68
    1
    Add To Cart
  • GMC 15635279
    15635279
    WHEEL, SPEEDOMETER DRIVE MAGNETIC
  • RING, Transmission Rear Bearing and Mainshaft
    GMC 15635283
    15635283
    RING, MAIN SHAFT REAR BEARING RETAINER
    $8.31 $4.27
    1
    Add To Cart
  • GMC 2600236
    2600236
    RING, MAIN SHAFT REAR BEARING RETAINING
  • GMC 3866655
    3866655
    RING, MAIN DRIVE GEAR BEARING RETAINING (3.7 INCH DIAMETER)(*KIT2)
  • GMC 3901152
    3901152
    RING, MAIN DRIVE GEAR RETAINING (2.0 INCH DIAMETER)(*KIT2)
  • WASHER, Transmission Mount and Support
    GMC 15635289
    15635289
    WASHER, TRANS(MAINSHAFT)
    $2.76 $1.76
    1
    Add To Cart
  • GMC 15635289
    15635289
    WASHER, TRANS (1.0X1.52X.162)(AS REQUIRED)
    $2.76 $1.76
    1
    Add To Cart
  • SHIM, Transmission Main Shaft Gear Retaining
    GMC 15636196
    15636196
    SHIM, MAIN SHAFT BEARING(.0176-.0186)(AS REQUIRED)(4.412)
    $9.21 $7.51
    1
    Add To Cart
  • GMC 15636198
    15636198
    SHIM, MAIN SHAFT BEARING(.0231-.0241)(AS REQUIRED)(4.412)
    $9.21 $7.51
    1
    Add To Cart
  • GMC 15636199
    15636199
    SHIM, MAIN SHAFT BEARING(.0253-.0263)(AS REQUIRED)(4.412)
    $9.21 $7.51
    1
    Add To Cart
  • GMC 15636201
    15636201
    SHIM, MAIN SHAFT BEARING(.0297-.0307)(AS REQUIRED)
    $13.05
    1
    Add To Cart
  • GMC 15636195
    15636195
    SHIM, MAIN SHAFT BEARING(.0165-.0175)(AS REQUIRED)
  • GMC 15636197
    15636197
    SHIM, MAIN SHAFT BEARING(.0209-.0219)(AS REQUIRED)
  • GMC 15636200
    15636200
    SHIM, MAIN SHAFT BEARING(.0275-.0285)(AS REQUIRED)
  • GMC 15636202
    15636202
    SHIM, MAIN SHAFT BEARING(.0320-.0330)(AS REQUIRED)
  • SHIM, Transmission Countershaft Gear
    GMC 15636208
    15636208
    SHIM, COUNTER GEAR BEARING(.0150-.0160)(AS REQUIRED)
    $9.21 $3.38
    1
    Add To Cart
  • GMC 15636210
    15636210
    SHIM, COUNTER GEAR BEARING(.0194-.0204)(AS REQUIRED)
    $9.21 $3.38
    1
    Add To Cart
  • GMC 15636212
    15636212
    SHIM, COUNTER GEAR BEARING(.0238-.0248)(AS REQUIRED)
    $9.12 $3.33
    1
    Add To Cart
  • GMC 15636213
    15636213
    SHIM, COUNTER GEAR BEARING(.0260-.0270)(AS REQUIRED)(4.423)
    $9.21 $7.51
    1
    Add To Cart
  • GMC 15636207
    15636207
    SHIM, COUNTER GEAR BEARING(.0128-.0138)(AS REQUIRED)(4.423)
  • GMC 15636209
    15636209
    SHIM, COUNTER GEAR BEARING(.0172-.0182)(AS REQUIRED)(4.423)
  • SPRING, Transmission Synchronizer
    GMC 15637912
    15637912
    SPRING, SYNCHRONIZER (4 REQUIRED) (ALSO PART OF 93)
    $13.05
    1
    Add To Cart
  • GMC 15637912
    15637912
    SPRING, SYNCHRONIZER (3 REQUIRED) (ALSO PART OF 91)
    $13.05
    1
    Add To Cart
  • GMC 15637912
    15637912
    SPRING, GEAR SYNCHRONIZER (ALSO PART OF 92)
    $13.05
    1
    Add To Cart
  • GMC 3866359
    3866359
    SPRING, 3RD & 4TH SPEED CLUTCH KEY (2 REQUIRED)(*KIT2)
    $12.60
    1
    Add To Cart
  • GMC 3866646
    3866646
    SPRING, 1ST & 2ND SPEED CLUTCH KEY FRONT & REAR (2 REQUIRED)(*KIT2)
  • LEVER, Transmission Internal Shift
    GMC 8672979
    8672979
    LEVER, SHIFT SHAFT (REMANUFACTURE)(1988-89)(INCLUDE 230,231)(*02)
    $18.75 $13.05
    1
    Add To Cart
  • GMC 8672244
    8672244
    LEVER, SHIFT SHAFT (1990-91)(INCLUDE 230,231)
  • 8678461
    LEVER, SHIFT LOWER (COMPLETE)(INCLUDE 129-131,134)
  • WASHER, Transmission Reverse Idler Gear
    GMC 12382812
    12382812
    WASHER, REVERSE IDLER GEAR (FLAT 099X1.76X.09)(2 REQUIRED)
  • GMC 8672203
    8672203
    WASHER, REV IDLER GEAR THRUST(SPECIAL)(1989 2ND DESIGN W/0KDU,1990-91)(*KIT1)
  • RETAINER, Transmission Mainshaft Bearing
    GMC 12388895
    12388895
    RETAINER, INPUT SHAFT BEARING(1991 W/CODES CAU,KMU,UEU,UJU,CCU,KDU,CHU)(INCLUDE 206-208)
  • GMC 12388895
    12388895
    RETAINER, INPUT SHAFT BEARING(1988-1990) (INCLUDE 206-208)
  • BEARING, Transmission Internal Shift Shaft
    GMC 14080583
    14080583
    BEARING, SHIFT RAIL (1-2,3-4,5)(ALSO PART OF 301)
  • 23049549
    BEARING, DETENT PLUNGER (ALSO PART OF 200)
  • PIN, Transmission Interlock
    GMC 15590193
    15590193
    PIN, SHIFT INTERLOCK (.37X.75)(AS REQUIRED)
  • 23049829
    PIN, 3RD & 4TH SHIFT INTERLOCK
  • WASHER, Transmission First/Reverse Gear
    GMC 15635252
    15635252
    WASHER, REVERSE GEAR THRUST (FLAT 1.88X3.5X.27)
  • GMC 23049744
    23049744
    WASHER, THRUST (SPECIAL)(1988,1989 1ST DESIGN W/9KDU)(M40.1X57X4.95)(*KIT1)
  • PIN, Transmission Case
    GMC 15635284
    15635284
    PIN, TRANS CASE LOCATING(2 REQUIRED)
  • GMC 15635315
    15635315
    PIN, COVER (DIAMETER 468, LEN .485)(2 REQUIRED)
  • SLEEVE, Transmission Shift Shaft Detent
    GMC 15637291
    15637291
    SLEEVE, OVERDRIVE SYNCHRONIZER (ALSO PART OF 91)
  • GMC 15637291
    15637291
    SLEEVE, REVERSE SHIFT SHAFT DETENT SPRING
  • PLUG
    GMC 15637304
    15637304
    PLUG, AUTO SQUARE HEAD PIPE (3/4X14 STEEL ZINC COATED (DIPPED OR PLATED))(AS REQUIRED)
  • GMC 23049822
    23049822
    PLUG, CUP (15.15 OUTSIDE DIAMETER,5 THICK,STEEL,ZINC COATED (DIPPED OR PLATED))(AS REQUIRED)
  • PLUG, Engine Clutch Housing
    GMC 15677601
    15677601
    PLUG, CLUTCH FORK ACCESS HOLE(1)(1988-91)K(1,2)(MG5)
  • GMC 15677601
    15677601
    PLUG, CLUTCH FORK ACCESS HOLE
  • GMC 19369733
    19369733
    ADHESIVE, Truck Maintenance, ADHESIVE,THREADLOCKER(HIGH-STRENGTH)(HIGH-TEMPERATURE)(RED)(0.20 OUNCE)(ADHESIVE KIT, THREAD LOCK (10 ML)(AS REQUIRED))(AS REQUIRED)
    $11.47 $6.39
  • SPRING, Transmission Internal Shift
    GMC 23049477
    23049477
    SPRING, BIAS LOAD TORSION (1988,1989 1ST DESIGN W/9KDU)
  • GMC 551946
    GMC 551946
    551946
    SPRING, 3RD & 4TH SHIFT LEVER DETENT BALL (AS REQUIRED)
  • GMC 8678655
    8678655
    SPRING, BIAS LOAD TORSION (1989-90 2ND DESIGN W/0KDU)
  • GMC 8678655
    8678655
    SPRING, BIAS LOAD TORSION (1991)
  • 23049525
    NUT, NUT, HEXAGON JAM (M16X1.5X8,4T, PLAIN, LH THREAD)(AS REQUIRED)
  • RING, Transmission Countershaft Gear
    GMC 2600236
    2600236
    RING, COUNTER GEAR REAR BEARING RETAINING(*KIT2)
  • GMC 3866346
    3866346
    RING, COUNTER GEAR RETAINING(*KIT2)
  • SPRING, Transmission Interlock
    GMC 3978731
    3978731
    SPRING, REVERSE SHIFT FORK (2 11/32 FREE LENGTH)
  • GMC 551946
    GMC 551946
    551946
    SPRING, REVERSE SHIFT LEVER DETENT BALL (AS REQUIRED)
  • 9438486
    SCREW, SCREW, PAN HEAD SLOTTED (#10-24X3/8)(AS REQUIRED)
Standard Parts
  • GMC 11515755
    GMC 11515755
    11515755
    BOLT, HEXAGON W/CONICAL WASHER (M8X1.25X16, 9.8 PHOSPHATE ZINC ORGANIC)(AS REQUIRED)
    $13.05
    1
    Add To Cart
  • GMC 15531205
    GMC 15531205
    15531205
    WASHER, FLAT,13.4X24.8X2.9,FLATS ON SIDES FOR INSIDE DIAMETER,HARD,PLATE STEEL(AS REQUIRED)
    $11.42 $6.37
    1
    Add To Cart
  • GMC 11501033
    GMC 11501033
    11501033
    NUT, HEXAGON PRVG TORQUE (M10X1.5, 10 CADMIUM)(AS REQUIRED)
    $7.37 $4.69
    1
    Add To Cart
  • GMC 11503867
    11503867
    BOLT, HEXAGON (M6X1X20, 9.8 PHOSPHATE ZINC ORGANIC)(ALSO PART OF 237)(AS REQUIRED)
    $2.22 $1.40
    10
    Add To Cart
  • GMC 11092971
    GMC 11092971
    GMC 11092971
    11092971
    BOLT, HEXAGON SOCKET (M8X1.25X50,12.9 PHOSPHATE ZINC ORGANIC)(AS REQUIRED)
    $13.05
    1
    Add To Cart
  • GMC 11561048
    GMC 11561048
    GMC 11561048
    GMC 11561048
    GMC 11561048
    11561048
    BOLT, HEX FLANGED HEAD (3/8-16X5/8, 280M PHOSPHATE ORGANIC)(AS REQUIRED)
    $5.10 $3.24
    1
    Add To Cart
  • GMC 11509417
    11509417
    BOLT, HEXAGON (M6X1X25, 9.8 PHOSPHATE ZINC ORGANIC)(ALSO PART OF 237)(AS REQUIRED)
    $3.39 $2.15
    1
    Add To Cart
  • GMC 12338111
    GMC 12338111
    12338111
    PIN, SPRING (3/16X1 1/8, STAINLESS STEEL PLAIN)(TYPE A)(AS REQUIRED)
    $3.93 $2.63
    10
    Add To Cart
  • GMC 444746
    444746
    PLUG, SQUARE HEAD FILL & DRAIN (1/2-14)(AS REQUIRED)(*KIT2)
    $8.62 $5.45
    1
    Add To Cart
  • GMC 9431704
    9431704
    PIN, THRUST WASHER RETAINING
    $11.70 $9.52
    1
    Add To Cart
  • GMC 9431704
    9431704
    PIN, (1/8X17/64, PLAIN)(AS REQUIRED)
    $11.70 $9.52
    1
    Add To Cart
  • GMC 11509419
    GMC 11509419
    11509419
    BOLT, HEXAGON (M10X1.5X25, 10.9 PHOSPHATE ORGANIC)(AS REQUIRED)
  • GMC 11513805
    11513805
    BOLT, HEXAGON (M8X1.25X22,FULL THREAD,9.8)(AS REQUIRED)
  • GMC 14080573
    14080573
    PLUG, CUP (17OD,1 THICK,5 DEEP,1010 STEEL)(AS REQUIRED)
  • GMC 23047261
    23047261
    BOLT, HEX FLANGED HEAD (3/8X16X3.75, 280M, PLATE STEEL)(AS REQUIRED)
  • GMC 23049820
    23049820
    PLUG, (M12,3 THICK,STEEL,ZINC COATED (DIPPED OR PLATED))(AS REQUIRED)
  • GMC 273937
    273937
    PIN, SPRING,1/8X1 1/4,STEEL,ZINC COATED(AS REQUIRED)(*KIT1,KIT2)
  • GMC 9442300
    9442300
    SCREW, ,HEXAGON W/WASHER 5/16-18 X 1 PO(AS REQUIRED)(4.720)
Genuine GM Parts, the Right Choice
GMPartsGiant.com offers the wholesale prices for genuine 1991 GMC K2500 parts. Parts like Manual Transmission are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4L. Model Code: K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB.