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  2. GMC Trucks
  3. 1999
  4. Sierra 2500 2WD (New Style)
  5. Transfer Case

1999 GMC Trucks Sierra 2500 2WD (New Style) transfer case parts catalog

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Sensor, transfer case (np8) case (new process 246)

  • OEM part number: 12376520
  • Quantity in car: 3
  • Vehicle speed (screw in with o-ring) (2-way male)
  • Usage: K1, 2, 3 (LU3, L35, LQ4, LR4, L35, LM7, L59, NP1, NP2, NP3, NP8), K1, 2, 3 (LU3, L35, LQ4, LR4, L35, LM7, L59, NP1, NP2, NP3, NP8), K1, 2, K1, 2, 3 (LU3, L35, LQ4, LR4, L35, LM7, L59, NP1, NP2, NP3, NP8), K1, 2, 3 (LU3, L35, LQ4, LR4, L35, LM7, L59, NP1, NP2, NP3, NP8)

$32.79—35.28

Available in 2 shops

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Sensor, transfer case (np8) case (new process 246)

  • OEM part number: 12376520
  • Quantity in car: 1
  • Vehicle speed (screw in with o-ring) (2-way male)
  • Usage: K1, 2, 3 (L35, LQ4, LR4, L35, LM7, NP1, NP2, NP3, NP8), K1, 2, 3 (L35, LQ4, LR4, L35, LM7, NP1, NP2, NP3, NP8), K1, 2, 3 (L35, LQ4, LR4, L35, LM7, NP1, NP2, NP3, NP8), K1, 2, 3 (L35, LQ4, LR4, L35, LM7, NP1, NP2, NP3, NP8), K2 (MT1, NP8), K2 (MN8, MT1, NP8), K2 (MN8, MT1, NP8), K2 (MT1, NP8)

$32.79—35.28

Available in 2 shops

Add to cart

Clutch, transfer case (np8) case (new process 246)

  • OEM part number: 12386242
  • Quantity in car: 1
  • Transfer case high/low (service together with fork 88962346)
  • Usage: K1, 2 (NP8)

$110.13—132.32

Available in 38 shops

Add to cart

Ring, transfer case (np8) case (new process 246)

  • OEM part number: 12470554
  • Quantity in car: 1
  • Transfer case rear output shaft rear bearing retain
  • Usage: K1, 2 (NP8)

$5.09—11.27

Available in 38 shops

Add to cart

Plug, transfer case (np8) case (new process 246)

  • OEM part number: 12470560
  • Quantity in car: 1
  • Transfer case access hole
  • Usage: K2 (MT1, NP8)

$7.85—10.21

Available in 38 shops

Add to cart

Stud, transfer case (np8) case (new process 246)

  • OEM part number: 12470962
  • Quantity in car: 6
  • Transfer case adapter (m10x1.5x27, m10x1.5x18)
  • Usage: K1, 2 (NP8)

$2.89—3.66

Available in 38 shops

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Magnet, transfer case (np8) case (new process 246)

  • OEM part number: 12471607
  • Quantity in car: 1
  • Transfer case chip collector
  • Usage: K1, 2 (NP8)

$5.31—7.60

Available in 38 shops

Add to cart

Washer, transfer case (np8) case (new process 246)

  • OEM part number: 12473056
  • Quantity in car: 1
  • Transfer case oil pump (type 241c/243c)
  • Usage: K1, 2 (NP8)

$2.76—3.04

Available in 2 shops

Add to cart

Lever, transfer case (np8) case (new process 246)

  • OEM part number: 12474067
  • Quantity in car: 1
  • Transfer case four wheel drive clutch
  • Usage: K1, 2 (NP8)

$51.16—57.29

Available in 2 shops

Add to cart

Lever, transfer case (np8) case (new process 246)

  • OEM part number: 12474400
  • Quantity in car: 1
  • Transfer case four wheel drive actuator
  • Usage: K1, 2 (NP8)

$12.25—13.71

Available in 2 shops

Add to cart

Actuator, transfer case (np8) case (new process 246)

  • OEM part number: 12474401
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)
  • A Service Bulletin Applies To This Part Number. Per Gm Service Policies And Procedures, Failure To Follow Bulletin Information May Result In The Rejection Of A Warranty Claim.

$372.25—449.83

Available in 38 shops

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Seal, transfer case (np8) case (new process 246)

  • OEM part number: 12474947
  • Quantity in car: 1
  • Usage: K1, 2 (NP8), K1, 2 (NP8)

$49.93—60.01

Available in 38 shops

Add to cart

Case, transfer case (np8) case (new process 246)

  • OEM part number: 12474948
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$418.57—548.77

Available in 38 shops

Add to cart

Case, transfer case (np8) case (new process 246)

  • OEM part number: 12474949
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$311.25—413.87

Available in 38 shops

Add to cart

Bearing, transfer case (np8) case (new process 246)

  • OEM part number: 12547173
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$16.39—29.49

Available in 38 shops

Add to cart

Bearing, transfer case (np8) case (new process 246)

  • OEM part number: 12547464
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$8.88—10.21

Available in 38 shops

Add to cart

Seal, transfer case (np8) case (new process 246)

  • OEM part number: 12547466
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$32.54—58.61

Available in 38 shops

Add to cart

Wheel, transfer case (np8) case (new process 246)

  • OEM part number: 12547474
  • Quantity in car: 1
  • Usage: K1, 2 (M30, MT1, NP8), K1, 2 (M30, MN8, MT1, NP8)

$16.71—30.08

Available in 38 shops

Add to cart

Pump, transfer case (np8) case (new process 246)

  • OEM part number: 12547630
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$65.02—88.88

Available in 38 shops

Add to cart

Ring, transfer case (np8) case (new process 246)

  • OEM part number: 12547637
  • Quantity in car: 1
  • Transfer case front output shaft rear bearing retain
  • Usage: K1, 2 (NP8), K1, 2 (NP8)

$3.91—7.05

Available in 38 shops

Add to cart

Seal, transfer case (np8) case (new process 246)

  • OEM part number: 12547638
  • Quantity in car: 1
  • Transfer case rear output shaft (stamped 22507) (booted)
  • Usage: K1, 2 (NP8)

$48.61—59.57

Available in 38 shops

Add to cart

Bolt, transfer case (np8) case (new process 246)

  • OEM part number: 12547642
  • Quantity in car: 1
  • Transfer case shift detent spring (5/8-18 x 1/2) (aluminum)
  • Usage: K1, 2 (NP8)

$2.76—5.18

Available in 38 shops

Add to cart

Shaft, transfer case (np8) case (new process 246)

  • OEM part number: 12547661
  • Quantity in car: 1
  • Transfer case shift fork
  • Usage: K1, 2 (NP8)

$20.43—22.87

Available in 2 shops

Add to cart

Pinion, transfer case (np8) case (new process 246)

  • OEM part number: 14037948
  • Quantity in car: 2
  • Transfer case half location (dowel)
  • Usage: K1, 2 (NP8)

$5.75—6.44

Available in 2 shops

Add to cart

Padding, transfer case (np8) case (new process 246)

  • OEM part number: 14037966
  • Quantity in car: 2
  • Transfer case high/low shift fork (end)
  • Usage: K1, 2 (NP8)

$0.98—1.85

Available in 38 shops

Add to cart

Padding, transfer case (np8) case (new process 246)

  • OEM part number: 14070291
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$5.75—6.44

Available in 2 shops

Add to cart

Seal, transfer case (np8) case (new process 246)

  • OEM part number: 14071849
  • Quantity in car: 1
  • Transfer case shift detent plunger plug (O-ring) (.648 outside diameter)
  • Usage: K1, 2 (NP8)

$5.75—10.33

Available in 38 shops

Add to cart

Plug, transfer case (np8) case (new process 246)

  • OEM part number: 15032997
  • Quantity in car: 1
  • Transfer case oil fill
  • Usage: K1, 2 (NP8), K2 (NP8)

$5.60—10.11

Available in 38 shops

Add to cart

Plug, transfer case (np8) case (new process 246)

  • OEM part number: 15032997
  • Quantity in car: 1
  • Transfer case oil drain
  • Usage: K1, 2 (NP8), K2 (NP8)

$5.60—10.11

Available in 38 shops

Add to cart

Seal, transfer case (np8) case (new process 246)

  • OEM part number: 15547430
  • Quantity in car: 1
  • Transfer case oil pump suction pipe (O-ring)
  • Usage: K1, 2 (NP8), K2 (MT1, NP8), K2 (MN8, MT1, NP8)

$5.49—6.15

Available in 2 shops

Add to cart

Screen, transfer case (np8) case (new process 246)

  • OEM part number: 15547432
  • Quantity in car: 1
  • Transfer case oil pump
  • Usage: K1, 2 (NP8)

$10.38—30.35

Available in 38 shops

Add to cart

Spring, transfer case (np8) case (new process 246)

  • OEM part number: 15636639
  • Quantity in car: 1
  • Transfer case shift detent
  • Usage: K1, 2 (NP8)

$5.75—6.44

Available in 2 shops

Add to cart

Ring, transfer case (np8) case (new process 246)

  • OEM part number: 15662234
  • Quantity in car: 1
  • Transfer case shift detent lever retain (steel) (c-ring)
  • Usage: K1, 2 (NP8), K1, 2, 3 (NP1, NP8)

$5.75—10.30

Available in 38 shops

Add to cart

Bushing, transfer case (np8) case (new process 246)

  • OEM part number: 15662236
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$5.75—10.33

Available in 38 shops

Add to cart

Washer, transfer case (np8) case (new process 246)

  • OEM part number: 15662306
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$5.75—7.02

Available in 38 shops

Add to cart

Spring, transfer case (np8) case (new process 246)

  • OEM part number: 15662307
  • Quantity in car: 2
  • Usage: K1, 2 (NP8)

$5.75—7.17

Available in 38 shops

Add to cart

Bushing, transfer case (np8) case (new process 246)

  • OEM part number: 15665313
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$5.17—9.32

Available in 38 shops

Add to cart

Insulator, transfer case (np8) case (new process 246)

  • OEM part number: 88891184
  • Quantity in car: 1
  • Transfer case four wheel drive actuator
  • Usage: K1, 2 (NP8)

$9.05—9.99

Available in 2 shops

Add to cart

Plug, transfer case (np8) case (new process 246)

  • OEM part number: 88958815
  • Quantity in car: 1
  • Transfer case access hole
  • Usage: K1, 2 (MT1, NP8), K1, 2 (MN8, MT1, NP8)

$7.36—14.53

Available in 38 shops

Add to cart

Pipe, transfer case (np8) case (new process 246)

  • OEM part number: 88962338
  • Quantity in car: 1
  • Transfer case oil pump suction (with screen)
  • Usage: K1, 2 (NP8)

$8.97—10.03

Available in 2 shops

Add to cart

Bearing, transfer case (np8) case (new process 246)

  • OEM part number: 88962351
  • Quantity in car: 1
  • Transfer case rear output shaft rear
  • Usage: K1, 2 (NP8)

$46.08—56.16

Available in 38 shops

Add to cart

Bolt, transfer case (np8) case (new process 246)

  • OEM part number: 88996722
  • Quantity in car: 17
  • Transfer case (hexagon with flat aluminum washer, m10x1.5x40)
  • Usage: K1, 2 (NP8)

$3.03—6.35

Available in 38 shops

Add to cart

Fork, transfer case (np8) case (new process 246)

  • OEM part number: 89059621
  • Quantity in car: 1
  • Transfer case range (complete) (service together with 88962354/clutch) (with pads) (uses 2-12384966 pads)
  • Usage: K1, 2 (NP8)

$106.83—125.20

Available in 38 shops

Add to cart

Pinion, transfer case (np8) case (new process 246)

  • OEM part number: 89059638
  • Quantity in car: 2
  • Transfer case four wheel drive clutch lever pivot
  • Usage: K1, 2 (NP8)

$13.50—14.89

Available in 2 shops

Add to cart

Retainer, transfer case (np8) case (new process 246)

  • OEM part number: 89059653
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$5.71—11.68

Available in 38 shops

Add to cart

Ventilation, transfer case (np8) case (new process 246)

  • OEM part number: 89059654
  • Quantity in car: 1
  • Transfer case (aluminum ventilation)
  • Usage: K1, 2 (NP8)

$5.23—15.35

Available in 38 shops

Add to cart

Bearing, transfer case (np8) case (new process 246)

  • OEM part number: 89059659
  • Quantity in car: 1
  • Usage: K1, 2 (NP8), K1, 2, 3 (NP1, NP2, NP3, NP8), K1, 2 (NP2, NP8)

$48.29—58.85

Available in 38 shops

Add to cart

Bearing, transfer case (np8) internal components (new process 246)

  • OEM part number: 12350040
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$8.88—9.94

Available in 2 shops

Add to cart

Housing, transfer case (np8) internal components (new process 246)

  • OEM part number: 12384942
  • Quantity in car: 1
  • Transfer case four wheel drive clutch
  • Usage: K1, 2 (NP8)

$152.75—183.77

Available in 38 shops

Add to cart

Bearing, transfer case (np8) internal components (new process 246)

  • OEM part number: 12384993
  • Quantity in car: 1
  • Transfer case four wheel drive clutch pressure plate
  • Usage: K2 (MN8, MT1, NP8), K2 (MT1, NP8)

$48.02—53.76

Available in 2 shops

Add to cart

Ring, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470554
  • Quantity in car: 1
  • Transfer case rear output shaft rear bearing retain
  • Usage: K1, 2 (NP8)

$5.09—11.27

Available in 38 shops

Add to cart

Bearing, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470557
  • Quantity in car: 1
  • Transfer case four wheel drive clutch housing
  • Usage: K1, 2 (NP8)

$33.47—41.23

Available in 38 shops

Add to cart

Shim, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470944
  • Quantity in car: 1
  • Transfer case four wheel drive clutch (.425mm)
  • Usage: K1, 2 (NP8)

$10.76—12.04

Available in 2 shops

Add to cart

Shim, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470945
  • Quantity in car: 1
  • Transfer case four wheel drive clutch (.675mm)
  • Usage: K1, 2 (NP8)

$7.10—7.95

Available in 2 shops

Add to cart

Shim, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470946
  • Quantity in car: 1
  • Transfer case four wheel drive clutch (.925mm)
  • Usage: K1, 2 (NP8)

$7.45—8.34

Available in 2 shops

Add to cart

Shim, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470947
  • Quantity in car: 1
  • Transfer case four wheel drive clutch (1.175mm)
  • Usage: K1, 2 (NP8)

$7.71—8.64

Available in 2 shops

Add to cart

Shim, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470948
  • Quantity in car: 1
  • Transfer case four wheel drive clutch (1.425mm)
  • Usage: K1, 2 (NP8)

$6.17—6.91

Available in 2 shops

Add to cart

Shim, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470949
  • Quantity in car: 1
  • Transfer case four wheel drive clutch (1.675mm)
  • Usage: K1, 2 (NP8)

$11.51—12.89

Available in 2 shops

Add to cart

Plug, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470957
  • Quantity in car: 1
  • Transfer case input shaft bore (oil restrictor)
  • Usage: K1, 2 (NP8)

$2.72—3.00

Available in 2 shops

Add to cart

Shaft, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470958
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$106.83—185.77

Available in 38 shops

Add to cart

Washer, transfer case (np8) internal components (new process 246)

  • OEM part number: 12470959
  • Quantity in car: 1
  • Usage: K2 (MT1, NP8)

$5.75—10.65

Available in 38 shops

Add to cart

Wheel, transfer case (np8) internal components (new process 246)

  • OEM part number: 12472605
  • Quantity in car: 1
  • Usage: K1, 2 (NP8), K1, 2 (NP8)

$16.25—28.90

Available in 38 shops

Add to cart

Washer, transfer case (np8) internal components (new process 246)

  • OEM part number: 12473056
  • Quantity in car: 1
  • Transfer case oil pump (type 241c/243c)
  • Usage: K1, 2 (NP8)

$2.76—3.04

Available in 2 shops

Add to cart

Plug, transfer case (np8) internal components (new process 246)

  • OEM part number: 12473236
  • Quantity in car: 1
  • Usage: K1, 2 (NP8), K2 (MT1, NP8), K2 (MN8, MT1, NP8)

$2.76—3.68

Available in 38 shops

Add to cart

Washer, transfer case (np8) internal components (new process 246)

  • OEM part number: 12474069
  • Quantity in car: 1
  • Transfer case rear output shaft thrust (has 3 tabs)
  • Usage: K1, 2 (NP8)

$2.45—2.76

Available in 2 shops

Add to cart

Spring, transfer case (np8) internal components (new process 246)

  • OEM part number: 12474071
  • Quantity in car: 1
  • Transfer case four wheel drive clutch pressure plate
  • Usage: K1, 2 (NP8)

$6.38—7.14

Available in 2 shops

Add to cart

Chain, transfer case (np8) internal components (new process 246)

  • OEM part number: 12474602
  • Quantity in car: 1
  • Transfer case two/four wheel drive
  • Usage: K1, 2 (NP8)

$246.92—276.45

Available in 38 shops

Add to cart

Sprocket, transfer case (np8) internal components (new process 246)

  • OEM part number: 12474614
  • Quantity in car: 1
  • Usage: K1, 2 (NP8)

$48.30—87.10

Available in 38 shops

Add to cart

Sprocket, transfer case (np8) internal components (new process 246)

  • OEM part number: 12474614
  • Quantity in car: 1
  • Transfer case two/four wheel drive driven
  • Usage: K1, 2 (NP8)

$48.30—87.10

Available in 38 shops

Add to cart

Wheel, transfer case (np8) internal components (new process 246)

  • OEM part number: 12547474
  • Quantity in car: 1
  • Usage: K1, 2 (M30, MT1, NP8), K1, 2 (M30, MT1, NP8), K1, 2 (M30, MN8, MT1, NP8), K1, 2 (M30, MN8, MT1, NP8)

$16.71—30.08

Available in 38 shops

Add to cart

Ring, transfer case (np8) internal components (new process 246)

  • OEM part number: 12547475
  • Quantity in car: 1
  • Transfer case oil pump retain
  • Usage: K1, 2 (NP8)

$6.44

Available in 1 shop

Add to cart

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