Manual Transmission Main Gears fit your 1999 GMC C3500

Currently shopping for

1999 GMC C3500

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

Transmission - Automatic

Parts Questions

Sort by:

Recommended

Part No. & Part Description

Price & Qty.

Part No. &
Part Description

SPRING, Transmission Synchronizer
14082096
SPRING, SYN GEAR(PART OF 200)(O.D.-.18 INCHES-FREE LENGTH-.248 INCHES,APPROX)
Require Quantity: 04
Package Quantity: 1
$0.05 $0.03
1
Add To Cart
15637912
SPRING, SYN GEAR(PART OF 61)
- Require Quantity: 03
- Package Quantity: 1
$13.05
1
Add To Cart
15637912
SPRING, SYN GEAR(PART OF 201)
- Require Quantity: 03
- Package Quantity: 1
$13.05
1
Add To Cart
15637912
SPRING, SYN GEAR(PART OF 202)
- Require Quantity: 04
- Package Quantity: 1
$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
12548337
SYNCHRONIZER, OVERDRIVE GEAR(INCLUDES 129-132)
$627.62 $313.91
1
Add To Cart
12542865
SYNCHRONIZER, 3RD & 4TH GEAR(INCLUDES 91-94)

RING, Transmission Synchronizer

12382857
RING, 5TH GEAR BLOCKING(4.462)
$59.12 $37.58
1
Add To Cart
89058652
RING, 3RD GEAR BLOCKING
$32.98 $19.93
1
Add To Cart
89058652
RING, 4TH GEAR BLOCKING
$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
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

BEARING, Transmission Gear

12382813
BEARING, 5TH GEAR(4.472)(1-12382813 BEARING REPLACES 2-12350045 BRGS & 15635271 SPACER.)
$56.58 $35.96
1
Add To Cart
12549371
BEARING, 1ST GEAR(1ST & 2ND GEAR)
$56.58 $28.06
1
Add To Cart
12549371
BEARING, 1ST GEAR
$56.58 $28.06
1
Add To Cart
12351648
BEARING, MAIN DRIVE GEAR(PILOT))
12549372
BEARING, 1ST GEAR
15635245
BEARING, MAIN DRIVE GEAR

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

12382782
WHEEL, Speedometer Drive, WHEEL,VEHICLE SPEED SENSOR RELUCTOR(USED W/MAIN SHAFT 12382817 STAMPED 25330, 18779)
$173.50 $123.61
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(3RD SPEED)
$4.56 $2.97
1
Add To Cart
12382815
SPACER, MAIN SHAFT GEAR(REV)

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

HUB, Transmission Synchronizer
12473258
HUB, 1ST & REV GEAR CLUTCH(MAINSHAFT) USED TRANS CODE: GBBK,GBBL,GBBM,GBBN,GBBP; SEE 1ST DESIGN 12547203)
Fitting Vehicle Options: CK2,3(MW3)(2ND DES)
$255.19 $161.46
1
Add To Cart
12547203
HUB, 1ST & REV GEAR CLUTCH USED TRANS CODE: GARF,GARH GARJ,GAWM GAWN; SEE 2ND DESIGN 12473258)
- Fitting Vehicle Options: CK2,3(MW3)(MAIN SHF)(1ST DES)

12542559
BOLT, Transmission Rear Bearing & 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(LUGGAGE & FORK)
$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

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
15636199
SHIM, MAIN SHAFT BEARING(.0253-.0263)(4.412)
$9.21 $7.51
1
Add To Cart
15636201
SHIM, MAIN SHAFT BEARING(.0297-.0307)
$13.05
1
Add To Cart
15636195
SHIM, MAIN SHAFT BEARING(.0165-.0175)
15636197
SHIM, MAIN SHAFT BEARING(.0209-.0219)
15636200
SHIM, MAIN SHAFT BEARING(.0275-.0285)
15636202
SHIM, MAIN SHAFT BEARING(.0320-.0330)

SHIM, Transmission Countergear

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
15636207
SHIM, COUNTER GEAR BEARING(.0128-.0138)(4.423)

SHIM, Transmission Countershaft Gear

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
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

15665236
CONE, Transmission Clutch Gear, CONE,INPUT SHAFT BEARING(SEE RETAINER FOR CUP)
$62.85 $32.35
1
Add To Cart

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

9431704
PIN, Transmission Countershaft Gear, PIN,SPRING,1/8X17/64,STEEL,PLAIN
$11.70 $9.52
1
Add To Cart

BEARING, Transmission Countershaft Gear
12350936
BEARING, COUNTER GEAR REAR(INCLUDES 112,122)
Fitting Vehicle Options: CK2,3(03-43-53)(MW3)
12350939
BEARING, COUNTER GEAR FRONT(INCLUDES 118)
- Fitting Vehicle Options: CK2,3(MW3)

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

SHAFT, Transmission Mainshaft
12382817
SHAFT, MAIN
Fitting Vehicle Options: C2,307,309(MW3), C310,314(MW3,C7A,C7E,8S9)
12382819
SHAFT, MAIN(REPLACES 15637272 M/SHAFT STAMPED 17279)(USE TOGETHER WITH NEW TONE WHEEL 12546679 STAMPED 18777)
- Fitting Vehicle Options: C310,314(MW3,C5B), C318(MW3)

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

BEARING, Transmission Reverse Idler Gear/Shaft
12382904
BEARING, REV IDLER GEAR
Fitting Vehicle Options: CK2,3(03-43-53)(MW3)
Replaced By: 19258955
12382905
BEARING, REV GEAR(MAINSHAFT)
- Fitting Vehicle Options: CK2,3(MW3)
19258955
BEARING, REV IDLER GEAR
- Fitting Vehicle Options: CK2,3(03-43-53)(MW3)

12475007
RETAINER, Transmission Rear Bearing & Mainshaft, RETAINER,MAIN SHAFT REAR BEARING(REAR)

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

15635197
CAP, Transmission Countergear, CAP,COUNTER GEAR BEARING(FRONT)

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

15635252
WASHER, Transmission First/Reverse Gear, WASHER,REV GEAR THRUST(FLAT 1.88X3.5X.27")(4.437)

15635267
RETAINER, Transmission Countershaft Gear, RETAINER,COUNTER GEAR REAR BEARING(REAR)(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, 5TH & REV GEAR SYN(PART OF 61)
15637291
SLEEVE, 5TH GEAR SYN(PART OF 202)

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)

11561048
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

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 1999 GMC C3500 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 5.7L, 8 Cyl 6.5L Diesel, 8 Cyl 7.4L. Model Code: C3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5, C3500 CREW CAB LONG WHEELBASE, C3500 CREW CAB SHORT WHEELBASE, C3500 EXTENDED CAB, C3500 REGULAR CAB.