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Caterpillar 3126B parts — Genuine & OEM Replacement Parts

1,644 part numbers
20 systems
12 months warranty

WSTPARTS supplies 1,644 genuine and high-quality OEM replacement parts for Caterpillar 3126B equipment, covering 20 major systems including Bolt/Nut, Structure, Electrical System, Drivetrain, Fitting. Every part number below is fitment-verified before dispatch, backed by factory-direct pricing and a 12-month warranty. Send us your machine serial number for a fast quotation.

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Caterpillar 3126B parts

Popular part types: injector filter hydraulic pump seal kit turbo belt bearing sensor

卡特彼勒3126B配件 for CAT 3126B

No "卡特彼勒3126B配件" parts found for CAT 3126B. Browse all parts below.

Bolt/Nut (364 parts)

0309612
SCREW
US$ 0.22
0310215
BOLT
US$ 1.23
0369821
WASHER
US$ 0.56
0369823
BOLT
US$ 1.68
0619325
SPACER
US$ 15.98
0910081
SPACER
US$ 9.49
0966166
WASHER
US$ 0.12
0L0639
BOLT
US$ 0.92
0L1143
CAP SCREW
US$ 0.67
0L1351
CAP SCREW
US$ 0.23
0S1615
CAP SCREW
US$ 0.13
0S1617
BOLT
US$ 0.16
0S1618
CAP SCREW
US$ 0.20
0T0598
BOLT
US$ 0.65
1013128
SPACER
US$ 32.46
View all 364 Bolt/Nut parts →

Structure (242 parts)

1006267
PLATE AS
US$ 95.08
1006550
HOUSING
US$ 3,084.08
1006551
HOUSING
US$ 3,084.08
1006657
PLATE
US$ 7.57
1007521
ADAPTER
US$ 150.61
1007522
ADAPTER
US$ 141.53
1013208
PLATE
US$ 15.34
1014632
SUPPORT AS
US$ 264.15
1014633
SUPPORT AS
US$ 280.73
1045320
ADAPTER FA
US$ 213.88
1059702
HOUSING A
US$ 103.90
1067149
HOUSING A
US$ 93.78
1067687
HOUSING A
US$ 222.99
1077701
COVER
US$ 39.77
1083560
PLATE-WARN
US$ 19.82
View all 242 Structure parts →

Electrical System (133 parts)

0307935
CONNECTOR
US$ 12.71
0308188
CONNECTOR
US$ 4.68
0308194
CONNECTOR
US$ 4.14
0689526
CAP
US$ 0.08
0S1566
CAPSCREW
US$ 1.14
0S1585
CAP SCREW
US$ 0.70
0S1587
CAP SCREW
US$ 0.81
0S1588
CAP SCREW
US$ 0.40
0S1590
CAP SCREW
US$ 0.56
0S1591
CAP SCREW
US$ 0.45
0S1594
CAP SCREW
US$ 0.28
0S1595
CAP SCREW
US$ 0.61
0T0320
CAPSCREW
US$ 0.48
1003320
PLUG A
US$ 5.18
1006656
DIODE A
US$ 27.14
View all 133 Electrical System parts →

Drivetrain (126 parts)

0694269
STEM
US$ 22.85
1007517
GEAR
US$ 447.04
1007518
BEARINGS
US$ 522.02
1007523
COUPLING
US$ 152.13
1007524
COUPLING
US$ 164.07
1014540
GEAR GP-FR
US$ 367.44
1028812
SEAL
US$ 0.19
1028813
SEAL
US$ 0.19
1077809
GEAR-CAM
US$ 600.22
1093207
SEAL O RIN
US$ 5.85
1154072
BEARING
US$ 33.11
1154134
GEAR AS
US$ 237.73
1171385
SEAL-O-RIN
US$ 1.77
1265011
SEALA01
US$ 6.87
1265466
GASKET
US$ 1.06
View all 126 Drivetrain parts →

Fitting (79 parts)

0307950
ELBOW
US$ 20.04
0307951
ELBOW
US$ 33.28
0315744
ELBOW
US$ 25.11
0545060
TUBE
US$ 23.74
1007520
TUBE AS
US$ 48.94
1177114
1561871
US$ 18.07
1231373
PLUG A
US$ 0.41
1291132
TUBE AS
US$ 209.01
1305917
ADAPTER-FA
US$ 555.53
1336517
CAP AS-DUS
US$ 10.32
1355970
TUBE AS JE
US$ 28.26
1371727
TUBE AS
US$ 620.64
1379863
ELBOW-AIR
US$ 25.59
1437347
ELBOW AIR
US$ 136.12
1465233
TUBE AS
US$ 39.63
View all 79 Fitting parts →

Wiring Harness (28 parts)

1006658
WIRE A
US$ 15.00
1051797
MOUNT-WIRE
US$ 1.74
1325559
WIRE AS
US$ 26.54
1342730
WIRE AS
US$ 19.76
1371590
HARNESS AS
US$ 181.48
1372114
HARNESS AS
US$ 240.73
1470286
WIRE AS
US$ 11.77
1538920
HARNESS AS
US$ 179.73
1799355
WIRE AS
US$ 16.45
1944613
HARNESS AS
US$ 226.94
1951344
HARNESS AS
US$ 182.83
1957336
HARNESS AS
US$ 661.10
2051767
WIRE AS
US$ 33.01
2V7397
CABLE A
US$ 45.54
2W0619
WIRE A
US$ 7.70
View all 28 Wiring Harness parts →

Repair Tools (28 parts)

1124550
SLEEVE-BUL
US$ 0.05
1321448
KIT-REPAIR
US$ 43.20
1330969
SOCKET-CON
US$ 14.02
1457385
SOCKET-RKR
US$ 9.57
1516320
TOOL REMOV
US$ 2.58
1863736
SOCKET-CON
US$ 0.94
6N1875
KIT TERMIN
US$ 32.69
7N7779
SOCKET
US$ 0.72
7N7807
KIT TERMIN
US$ 5.44
7N7808
KIT TERMIN
US$ 8.19
8C3655
BRUSH KIT
US$ 56.69
8N1543
SOCKET
US$ 10.07
8T9885
BRUSH KIT
US$ 37.93
9G5232
KIT TERMIN
US$ 6.99
9G7554
KIT TERMIN
US$ 2.17
View all 28 Repair Tools parts →

Hydraulic Hose (27 parts)

1095351
HOSE
US$ 64.33
1360806
HOSE
US$ 23.66
1554918
HOSE
US$ 31.42
1554920
HOSE FUMES
US$ 33.52
1776920
HOSE
US$ 62.23
1876294
HOSE AS-OI
US$ 36.98
1922963
HOSE AS
US$ 54.80
1922964
HOSE KIT
US$ 105.54
1943464
HOSE AS
US$ 34.19
2017810
HOSE AS
US$ 29.80
2051332
HOSE AS-O-
US$ 26.92
2058206
HOSE AS.
US$ 44.28
2071516
MOTOR GP-E
US$ 941.86
2119060
HOSE
US$ 89.07
3N4846
HOSE A
US$ 26.52
View all 27 Hydraulic Hose parts →

Cooling System (25 parts)

0366775
VEE BELT
US$ 15.07
1077750
PULLEY
US$ 354.25
1154204
PULLEY AS
US$ 254.14
1173437
PULLEY
US$ 140.65
1178129
PULLEY
US$ 620.59
1182089
PULLEY
US$ 183.90
1247792
PULLEY AS
US$ 164.99
1253722
PULLEY
US$ 318.57
1295096
PULLEY
US$ 67.61
1445611
PULLEY AS-
US$ 47.39
1510862
PULLEY AS-
US$ 160.28
1531036
PULLEY-
US$ 318.75
1714679
BELT
US$ 40.65
1722245
BELT (8K)
US$ 44.04
1753223
PULLEY AS-
US$ 146.90
View all 25 Cooling System parts →

Hydraulic System (22 parts)

1068559
STARTING MOTOR GP-ELECTRIC
US$ 849.51
1154138
PUMP GP-ENGINE OIL
Contact for price
1291165
CYLINDER BLOCK GP
US$ 6,016.96
1394081
LIFTER GP
US$ 325.61
1420371
REG-PRESS
US$ 202.36
174-9570
FILTER GP
Contact for price
1797002
ADAPTER AS
US$ 18.45
1797004
ADAPTER AS
US$ 52.55
1836831
HEAD
US$ 1,729.87
3B8485
FITTING
US$ 1.80
3B8489
FITTING
US$ 1.07
4B4550
FITTING
US$ 2.02
5L3233
FITTING
US$ 6.53
6K9194
FITTING
US$ 8.45
7N2059
CLAMP A
US$ 24.51
View all 22 Hydraulic System parts →

Drive Shaft (19 parts)

1013207
SHAFT
US$ 151.68
1154074
SHAFT AS
US$ 120.55
1154116
SHAFT AS O
US$ 130.60
1230856
SHAFT
US$ 63.41
1291170
SHAFT AS
US$ 138.32
1387198
SHAFT AS
US$ 160.45
1399476
SHAFT AS.
US$ 43.32
2004495
SHAFT-IDLE
US$ 152.40
3E7857
DRIVE A
US$ 139.27
3N4086
SHAFT
US$ 2,535.79
3N4896
SHAFT
US$ 1,792.44
4B4754
SHAFT
US$ 45.90
4B4756
SHAFT
US$ 64.11
4W2649
SHAFT
US$ 802.16
5N6094
SHAFT
US$ 1,200.15
View all 19 Drive Shaft parts →

Valve Assembly (18 parts)

1026229
CHECK NPR
US$ 1.91
1126523
INSERT
US$ 29.20
1344483
RETAINER
US$ 6.95
1376715
SEAT SPRIN
US$ 2.00
1388402
STAND-END
US$ 67.08
1406188
SPRING-VAL
US$ 10.06
1409670
GUIDE VALV
US$ 11.46
1457390
VALVE-INTA
US$ 32.69
1478211
VALVE-EXH
US$ 55.96
1478214
SEAL-V-STE
US$ 2.18
1478218
INSERT-SEA
US$ 16.42
1559504
INSERT-INT
US$ 10.20
1678359
CHECK NPR
US$ 233.00
1799348
VALVE
US$ 48.23
2A4429
LOCK
US$ 0.61
View all 18 Valve Assembly parts →

Engine Block (18 parts)

1051725
CHECK NPR
US$ 4,817.32
1154109
CHECK NPR
US$ 42.84
1192921
CHECK NPR
US$ 18.08
1L5517
SLEEVE
US$ 218.37
1W8407
SLEEVE
US$ 13.47
2051259
CAMSHAFT A
US$ 1,406.09
2L8260
SLEEVE
US$ 101.99
2W0027
BEARING
US$ 12.76
2W9128
CHECK NPR
US$ 247.72
3H9574
SLEEVE
US$ 211.95
4B4721
LINK
US$ 4.06
4W3087
CAP
US$ 17.33
4W7594
SLEEVE
US$ 43.92
5B5251
LINK
US$ 5.76
5L9647
SLEEVE
US$ 113.71
View all 18 Engine Block parts →

Spring (18 parts)

1051805
SPRING
US$ 6.37
1376717
SPRING
US$ 5.14
1376718
SPRING-VAL
US$ 14.60
2N9363
RETAINER
US$ 97.72
2N9421
SPRING
US$ 1.36
3N7955
SPRING
US$ 1.53
3N8124
SPRING
US$ 2.18
4B4782
RETAINER
US$ 107.83
4M1827
RETAINER
US$ 1.36
4M1828
RETAINER
US$ 1.16
5L9648
RETAINER
US$ 81.06
5L9655
RETAINER
US$ 79.48
7T6090
SPRING
US$ 1.20
8M5860
PLUG
US$ 3.53
9L2137
RETAINER A
US$ 4.13
View all 18 Spring parts →

Pin/Bushing (17 parts)

0960014
PIN SPRING
US$ 0.77
1261767
PIN
US$ 1.37
1863735
PIN-CONNEC
US$ 0.87
3B4613
COTTER PIN
US$ 0.06
3B4627
COTTER PIN
US$ 0.13
3B5301
COTTER PIN
US$ 0.13
3E3213
PIN-SPRING
US$ 2.10
3N7954
PIN
US$ 7.62
3N8123
PIN
US$ 22.56
6H3956
PIN
US$ 1.02
6L3965
PIN
US$ 1.81
6L3966
PIN
US$ 2.23
6L3967
PIN
US$ 1.82
6L3972
PIN
US$ 4.12
7N7780
PIN
US$ 0.27
View all 17 Pin/Bushing parts →

Cooling Fan (12 parts)

1006531
FAN
US$ 66.83
1074902
SPACER FAN
US$ 361.02
1923837
PULLEY-FAN
US$ 220.67
1949464
PULLEY-FAN
US$ 501.08
1949465
PULLEY-FAN
US$ 632.87
3E5454
FAN ALT
US$ 20.27
4N2571
FAN A
US$ 592.29
4N2572
FAN A
US$ 591.42
4N3091
FAN A
US$ 1,065.91
4N3092
FAN A
US$ 1,065.72
7T2793
FAN A
US$ 20.64
9W1904
FAN
US$ 14.44

Bearing (12 parts)

1077602
CHECK NPR
US$ 47.45
3H5552
PLUG
US$ 6.56
4B7270
CONE
US$ 51.37
7C6976
BRG-CON RO
US$ 22.63
7C6977
BRG-CON RO
US$ 24.45
7T2799
BRG KIT
US$ 35.00
7W9930
BEARING-SL
US$ 14.47
7X0449
NUT
US$ 1.78
8L4070
BEARING
US$ 14.18
9G7551
BEARING
US$ 32.28
9G7552
BEARING
US$ 61.99
9W1793
BEARING
US$ 14.55

Switch/Relay (12 parts)

1096507
SWITCH
US$ 67.07
1107884
SWITCH AS
US$ 35.17
1251302
SWITCH AS
US$ 68.43
1251303
SWITCH AS
US$ 66.95
1480757
SWITCH AS
US$ 66.95
1752301
SWITCH AS
US$ 66.95
3E0156
SWITCH A
US$ 60.95
3E6497
SWITCH A
US$ 424.16
3T3453
SWITCH
US$ 43.41
3T9493
VALVE AS
US$ 66.88
8C3569
SWITCH A
US$ 77.14
8T4139
BOLT
US$ 0.65

Light/Lamp (12 parts)

1274471
CLAMP
US$ 2.70
1419228
LAMP AS
US$ 14.63
1586072
CLAMP-COMP
US$ 96.04
1616963
CLAMP
US$ 0.31
1W2431
CLAMP
US$ 38.98
2N2371
LAMP
US$ 14.58
2N2372
LAMP
US$ 1.08
5P0599
CLAMP
US$ 5.04
5P0600
CLAMP
US$ 7.90
5P4961
CLAMP
US$ 2.35
6F8815
CLAMP
US$ 13.07
7N5876
LAMP
US$ 0.80

Seal (11 parts)

1004026
RETAINER B
US$ 98.98
1K2811
COLLAR A
US$ 131.60
4B4716
COLLAR A
US$ 154.97
7E7779
RETAINER
US$ 5.80
7J9108
SEAL
US$ 0.75
8C5237
SEAL-O-RIN
US$ 2.61
8L2779
O RING
US$ 2.88
8T1133
METER SEAL
US$ 45.02
8T9367
SEAL KIT
US$ 0.28
9M4849
SEAL O RIN
US$ 3.78
9X1284
SEAL KIT
US$ 31.44

FAQ

Are these genuine Caterpillar 3126B parts?
We supply both genuine CAT parts with anti-counterfeit labels and OEM-equivalent alternatives built to the same specifications. All parts are fitment-verified for the 3126B before dispatch and covered by a 12-month warranty.

How do I confirm the part number for my 3126B?
Match the part number on your old part, or send us your machine serial number — WSTPARTS verifies fitment free of charge.

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