Manual Transmission Main Gears fit your 2003 GMC Sierra 2500 2WD

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2003 GMC Sierra 2500 2WD

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Transmission - Automatic

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Part No. & Part Description

Price & Qty.

Part No. &
Part Description

SPRING, Transmission Synchronizer

14082096
SPRING, 1ST & 2ND GEAR SYN(PART OF 200)(O.D.-.18 INCHES-FREE LENGTH-.248 INCHES,APPROX)
$0.05 $0.03
1
Add To Cart
15637912
SPRING, SYN(PART OF 202)(O.D.-.24 INCHES-FREE LENGTH .65 INCHES(APPROX)
$13.05
1
Add To Cart
15637912
SPRING, SYN(PART OF 201)(O.D.-.24 INCHES-FREE LENGTH .65 INCHES(APPROX)
$13.05
1
Add To Cart

12547312
COVER, Transmission Power Take-Off, COVER,POWER TAKE-OFF
- Require Quantity: 02
- Package Quantity: 1
$17.07 $10.31
1
Add To Cart

SYNCHRONIZER, Transmission Synchronizer

88891103
SYNCHRONIZER, 1ST & 2ND GEAR(INCLUDES 76-81)
$90.62 $64.56
1
Add To Cart
12382875
SYNCHRONIZER, REV GEAR(INCLUDES 62,103,104)(4.417)
$712.71 $525.09
1
Add To Cart
12548337
SYNCHRONIZER, OVERDRIVE GEAR(INCLUDES 129-132)
$627.62 $313.91
1
Add To Cart
12542865
SYNCHRONIZER, 3RD & 4TH GEAR(INCLUDES 91-94)

11561048
BOLT, Hex, BOLT,HEXAGON W/FLAT WASHER-3/8-16X.625,.82 OUTSIDE DIAMETER,GM275 STEEL, GMW3200 FINISH(POWER TAKE-OFF COVER)
- Require Quantity: 06
- Package Quantity: 1
$5.10 $3.24
1
Add To Cart

RING, Transmission Synchronizer
12382857
RING, 5TH GEAR BLOCKING(4.462)
Require Quantity: 02
Package Quantity: 1
$59.12 $37.58
1
Add To Cart
89058652
RING, 3RD GEAR BLOCKING
- Require Quantity: 02
- Package Quantity: 1
$32.98 $19.93
1
Add To Cart
12382766
RING, 5TH GEAR SYN RETAINER(1.33"INSIDE DIAMETER X .1" THICK)(COUNTERSHAFT)
15635216
RING, TRANS MAIN SHAFT SYN INNER
- Require Quantity: 02
- Package Quantity: 1
15635219
RING, TRANS MAIN SHAFT SYN
- Require Quantity: 02
- Package Quantity: 1
15635233
RING, 3RD GEAR RETAINER(4.345)
15637274
RING, TRANS MAIN SHAFT SYN OUTER
- Require Quantity: 02
- Package Quantity: 1

12549369
RETAINER, Transmission Front, RETAINER,TRANS MAIN DRIVE GEAR BEARING(INCLUDES 115,116)(INCLUDES CUP)
$24.76 $15.73
1
Add To Cart

14037974
RING, Transmission First/Reverse Gear, RING,REV GEAR RETAINER(4.538)

BEARING, Transmission Gear

12382813
BEARING, 5TH GEAR(4.472)
$56.58 $35.96
1
Add To Cart
12549371
BEARING, 1ST GEAR(1ST & 2ND GEAR)(4.383)
- Require Quantity: 02
- Package Quantity: 1
$56.58 $28.06
1
Add To Cart
12351648
BEARING, MAIN DRIVE GEAR(1.82 DIAMETER .976 THICK)
12549372
BEARING, 3RD GEAR

12382877
SHAFT, Transmission Main Drive(Clutch), SHAFT,INPUT(MAIN DRIVE GEAR)(22/39 TEETH)
$245.51 $141.05
1
Add To Cart

12382792
GEAR,Fourth & Fifth Gear, GEAR,3RD(INCLUDES 89)(29 TEETH)
$63.47 $40.34
1
Add To Cart

SPACER, Transmission Main Shaft Gear Retaining

12382814
SPACER, MAIN SHAFT GEAR BEARING
$4.56 $2.97
1
Add To Cart
12382815
SPACER, MAIN SHAFT GEAR

12382834
SHAFT, Transmission Countershaft, SHAFT,COUNTER GEAR
$798.28 $502.80
1
Add To Cart

12386077
SEAL, Transmission Main Drive, SEAL,TRANS DRIVE GEAR BEARING CAP OIL(PART OF 114)
$4.06 $2.58
1
Add To Cart

GEAR, Transmission Main Drive(Clutch)

12386535
GEAR, TRANS DRIVE GEAR CLUTCH
$31.09 $23.92
1
Add To Cart
12547204
GEAR, TRANS CLUTCH

12473258
HUB, Transmission Synchronizer, HUB,1ST & REV GEAR CLUTCH(MAINSHAFT)
$255.19 $161.46
1
Add To Cart

12542559
BOLT, Transmission Mainshaft, BOLT,BEARING RETAINER PLATE(5/16-18X1)(HEXAGON W/CONICAL WASHER)(TO CASE)
- Require Quantity: 08
- Package Quantity: 1
$2.98 $1.90
1
Add To Cart

12547191
MAGNET, Transmission Case, MAGNET,TRANS CHIP COLLECTOR(1.35" SQUARE)
$8.50 $3.11
1
Add To Cart

12548339
GEAR, Transmission Mainshaft, GEAR,TRANS MAIN SHAFT OVERDRIVE(22 TEETH)
$686.60 $434.41
1
Add To Cart

12548394
SHAFT, Transmission Internal Shift Shaft, SHAFT,5TH SHIFT
$37.86 $24.06
1
Add To Cart

15635217
RING, Transmission Rear Bearing & Mainshaft, RING,MAIN SHAFT BEARING RETAINER
- Require Quantity: 04
- Package Quantity: 1
$13.05
1
Add To Cart

15635252
WASHER, Transmission First/Reverse Gear, WASHER,REV GEAR THRUST(FLAT 1.88X3.5X.27")(4.437)
$22.21 $8.73
1
Add To Cart

15635262
WASHER, Transmission Countershaft Gear, WASHER,COUNTER GEAR THRUST(FLAT,1.58X2.66X.35)
$43.44 $34.11
1
Add To Cart

SHIM, Transmission Main Shaft Gear Retaining

15636196
SHIM, MAIN SHAFT BEARING(.0176-.0186)(4.412)
$9.21 $7.51
1
Add To Cart
15636198
SHIM, MAIN SHAFT BEARING(.0231-.0241)(4.412)
$9.21 $7.51
1
Add To Cart
15636201
SHIM, MAIN SHAFT BEARING(.0297-.0307)(4.412)
$13.05
1
Add To Cart
15636195
SHIM, MAIN SHAFT BEARING(.0165-.0175)(4.412)
15636197
SHIM, MAIN SHAFT BEARING(.0209-.0219)(4.412)
15636202
SHIM, MAIN SHAFT BEARING(.0320-.0330)(4.412)

SHIM, Transmission Main Shaft Gear

15636199
SHIM, MAIN SHAFT BEARING(.0253-.0263)(4.412)
$9.21 $7.51
1
Add To Cart
15636200
SHIM, MAIN SHAFT BEARING(.0275-.0285)(4.406)

SHIM, Transmission Countershaft Gear

15636208
SHIM, COUNTER GEAR BEARING(.0150-.0160)(4.423)
$9.21 $3.38
1
Add To Cart
15636210
SHIM, COUNTER GEAR BEARING(.0194-.0204)(4.423)
$9.21 $3.38
1
Add To Cart
15636211
SHIM, COUNTER GEAR BEARING(.0216-.0226)(4.423)
$9.14 $7.45
1
Add To Cart
15636212
SHIM, COUNTER GEAR BEARING(.0238-.0248)(4.423)
$9.12 $3.33
1
Add To Cart
15636213
SHIM, COUNTER GEAR BEARING(.0260-.0270)(4.423)
$9.21 $7.51
1
Add To Cart
15636207
SHIM, COUNTER GEAR BEARING(.0128-.0138)(4.423)
15636209
SHIM, COUNTER GEAR BEARING(.0172-.0182)(4.423)

STRUT, Transmission Synchronizer
15637285
STRUT, TRANS 3RD & 4TH OVERDRIVE & REV SYN(PART OF 201)
Require Quantity: 06
Package Quantity: 1
$3.80 $2.42
1
Add To Cart
15637285
STRUT, TRANS 3RD & 4TH OVERDRIVE & REV SYN(PART OF 202)
- Require Quantity: 06
- Package Quantity: 1
$3.80 $2.42
1
Add To Cart
15637285
STRUT, TRANS 3RD & 4TH OVERDRIVE & REV SYN(PART OF 61)
- Require Quantity: 06
- Package Quantity: 1
$3.80 $2.42
1
Add To Cart

15637912
SPRING, Gear Disengage, SPRING,REV GEAR SYN(PART OF 61)(O.D.-.24 INCHES-FREE LENGTH .65 INCHES(APPROX)(4.384)
- Require Quantity: 03
- Package Quantity: 1
$13.05
1
Add To Cart

15665236
CONE, Transmission Clutch Gear, CONE,INPUT SHAFT BEARING(4.105)
$62.85 $35.17
1
Add To Cart

9424877
BOLT, Engine Camshaft gear, BOLT,HEXAGON .312-18X.750 300M PC(TRANS)(8.900)
- Require Quantity: 04
- Package Quantity: 5
$3.43 $2.20
5
Add To Cart

BEARING, Transmission Countershaft Gear

12350936
BEARING, COUNTER GEAR REAR(INCLUDES 112,122)
12350939
BEARING, COUNTER GEAR FRONT(INCLUDES 118)

12382782
WHEEL, Speedometer Drive, WHEEL,VEHICLE SPEED SENSOR RELUCTOR
$173.50 $108.79

12382812
WASHER, Transmission Reverse Idler Gear, WASHER,REV IDLER GEAR
- Require Quantity: 02
- Package Quantity: 1

12382839
GEAR, Transmission Reverse Idler, GEAR,REV IDLER(15 TEETH)

12382892
SHAFT, Transmission Mainshaft, SHAFT,MAIN

BEARING, Transmission Reverse Idler Gear/Shaft
12382904
BEARING, REV IDLER GEAR
Fitting Vehicle Options: CK2,3(LQ4,MW3)
Replaced By: 19258955
12382905
BEARING, REV GEAR
- Fitting Vehicle Options: CK2,3(MW3)
19258955
BEARING, REV IDLER GEAR
- Fitting Vehicle Options: CK2,3(LQ4,MW3)

12475007
RETAINER, Transmission Mainshaft, RETAINER,MAIN SHAFT REAR BEARING

12478061
CASE, Transmission Case, CASE,TRANS

12547836
FORK, Transmission Internal Shift, FORK,5TH SHIFT

15635197
CAP, Transmission Countershaft Gear, CAP,COUNTER GEAR BEARING

15635232
WASHER,Fifth & Sixth Gear, WASHER,3RD GEAR THRUST(FLAT1.9X3.28X.188)

15635245
BEARING, Transmission Clutch Gear, BEARING,MAIN DRIVE GEAR

15635267
RETAINER, Transmission Countershaft Gear, RETAINER,COUNTER GEAR REAR BEARING(4.423)

15637279
GEAR, Transmission First/Reverse Gear, GEAR,1ST(INCLUDE CLUTCH GEAR)(INCLUDES 71)

15637281
GEAR, Transmission Second Speed, GEAR,2ND(INCLUDES CLUTCH GEAR)(TRANS MAIN SHAFT)(37 TEETH)

SLEEVE, Transmission Synchronizer

15637291
SLEEVE, REV GEAR SYN(PART OF 61)(4.311)
15637291
SLEEVE, 5TH GEAR SYN(PART OF 202)(4.311)

19369733
ADHESIVE, Truck Maintenance, ADHESIVE,THREADLOCKER(HIGH-STRENGTH)(HIGH-TEMPERATURE)(RED)(0.20 OUNCE)(TRANS BOLT)
$11.47 $6.39

2462226
PIN, Transmission Internal Shift, PIN,5TH SHIFT FORK(HAS ONE CHAMFERED END)
- Require Quantity: 02
- Package Quantity: 1

9418223
BEARING, Transmission Mainshaft Center/Rear, BEARING,MAIN SHAFT REAR(INCLUDES CUP AND CONE, TIMKEN, M804049-M804010)

9431704
PIN, SPRING,1/8X17/64,STEEL,PLAIN(COUNTER GEAR KEY)
$11.70 $9.52
1
Add To Cart

9431704
PIN, SPRING,1/8X17/64,STEEL,PLAIN
- Require Quantity: 02
- Package Quantity: 1
$11.70 $9.52
1
Add To Cart

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 2003 GMC Sierra 2500 2WD parts. Parts like Manual Transmission Main Gears are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L. Model Code: 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB.