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Caterpillar C9 parts — Genuine & OEM Replacement Parts

2,582 part numbers
20 systems
12 months warranty

WSTPARTS supplies 2,582 genuine and high-quality OEM replacement parts for Caterpillar C9 equipment, covering 20 major systems including Bolt/Nut, Structure, Drivetrain, Fitting, Electrical System. 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 C9 parts

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Caterpillar C9 parts for CAT C9

No "Caterpillar C9 parts" parts found for CAT C9. Browse all parts below.

Bolt/Nut (525 parts)

0023448
CLIP
US$ 12.84
0120380
WASHER
US$ 0.46
0309612
SCREW
US$ 0.22
0310215
BOLT
US$ 1.23
0334814
SCREW
US$ 2.91
0338248
CLIP
US$ 1.87
0369821
WASHER
US$ 0.56
0369823
BOLT
US$ 1.68
0454065
SCREW
US$ 0.14
0863279
SCREW-MACH
US$ 0.63
0950706
BOLT,HEXso
US$ 16.15
0957930
SCREW,MACH
US$ 0.23
0959232
BOLT
US$ 10.82
0960192
WASHER
US$ 0.45
0966166
WASHER
US$ 0.12
View all 525 Bolt/Nut parts →

Structure (317 parts)

0341432
STRAP
US$ 1.89
1007521
ADAPTER
US$ 150.61
1007522
ADAPTER
US$ 141.53
1025828
COVER AS
US$ 343.01
1055138
HOUSING
US$ 492.12
1083561
PLATE
US$ 65.40
1108213
BRACKET AS
US$ 66.89
1111325
BLOCK
US$ 19.80
1117238
PLATE
US$ 14.98
1124159
MOUNTING A
US$ 26.71
1136069
PLATE
US$ 22.19
1140268
LEVER AS
US$ 32.61
1154219
PLATE
US$ 11.07
1187809
PLATE
US$ 5.51
1202243
PLATE-CLAM
US$ 3.64
View all 317 Structure parts →

Drivetrain (220 parts)

0091436
BEARING
US$ 4.84
0617539
SEAL
US$ 5.34
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
1069586
SEAL O RIN
US$ 4.09
1076280
SEAL O RIN
US$ 11.62
1085803
SEAL-O-RIN
US$ 2.66
1093207
SEAL O RIN
US$ 5.85
1125282
SEAL
US$ 1.77
1139543
GASKET
US$ 17.50
1142687
SEAL-O-RIN
US$ 3.55
1149088
SEAL-PUMP
US$ 21.13
View all 220 Drivetrain parts →

Fitting (208 parts)

0016936
ELBOW
US$ 15.58
0054362
ELBOW
US$ 9.58
0307942
ELBOW
US$ 8.90
0307943
ELBOW
US$ 9.66
0307947
ELBOW
US$ 7.64
0307950
ELBOW
US$ 20.04
0307951
ELBOW
US$ 33.28
0307962
ELBOW
US$ 9.61
0308144
REDUCER
US$ 1.95
0328487
ELBOW
US$ 35.77
0673676
REDUCER
US$ 72.60
0680006
TUBE
US$ 9.97
0684174
ELBOW
US$ 16.93
1034675
ELBOW
US$ 21.62
1106349
NIPPLE AS
US$ 18.57
View all 208 Fitting parts →

Electrical System (192 parts)

0307935
CONNECTOR
US$ 12.71
0L1026
PLUG
US$ 1.95
0S0519
PLUG
US$ 13.38
0S1566
CAPSCREW
US$ 1.14
0S1571
CAP SCREW
US$ 0.49
0S1587
CAP SCREW
US$ 0.81
0S1589
CAP SCREW
US$ 1.33
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
1010387
CONNECTOR
US$ 5.41
1028802
RECPTACLE
US$ 3.42
1028805
RECPTACLE
US$ 6.29
View all 192 Electrical System parts →

Hydraulic Hose (70 parts)

0907055
HOSE A
US$ 21.37
1034669
HOSE AS
US$ 36.10
1095351
HOSE
US$ 64.33
1180284
HOSE A
US$ 48.85
1188103
HOSE AS
US$ 42.86
1241047
HOSE A
US$ 119.70
1246258
CLAMP-HOSE
US$ 1.50
1246265
CLAMP-HOSE
US$ 3.44
1265882
HOSE
US$ 12.67
1490763
HOSE AS
US$ 37.27
1723445
HOSE AS
US$ 49.27
1731819
HOSE-SEA W
US$ 25.10
1770581
HOSE-HUMP
US$ 54.28
1789410
HOSE-ELBOW
US$ 23.97
1790091
HOSE
US$ 68.09
View all 70 Hydraulic Hose parts →

Wiring Harness (51 parts)

1051797
MOUNT-WIRE
US$ 1.74
1108714
END WIRE
US$ 0.75
1311449
CABLE AS
US$ 11.13
1532707
CM E-CABLE
US$ 0.19
1598049
CM CABLE-E
US$ 0.19
1598050
CM CABLE-E
US$ 0.19
1650200
CABLE AS
US$ 57.04
1650201
CABLE AS
US$ 62.47
1899108
HARNESS AS
US$ 20.73
1944613
HARNESS AS
US$ 226.94
1945226
HARNESS AS
US$ 4.48
1945227
HARNESS AS
US$ 2.23
1951344
HARNESS AS
US$ 182.83
2017180
HARNESS AS
US$ 283.52
2053729
WIRE AS
US$ 32.71
View all 51 Wiring Harness parts →

Hydraulic System (43 parts)

1025829
ADAPTER AS
US$ 171.67
1488389
ELBOW AS
US$ 4.63
1488395
PLUG AS
Contact for price
1646148
CRANKSHAFT GP
Contact for price
1712211
BREAKER AS
US$ 47.74
1712213
BREAKER AS
US$ 57.74
174-9570
FILTER GP
Contact for price
1852646
BUSHING
US$ 2.81
2071549
STARTING MOTOR GP-ELECTRIC
US$ 1,124.70
2087552
FITTING-HO
US$ 50.27
2151817
GEAR (48 TEETH)
US$ 1,650.08
2462009
TERMINAL
US$ 2.90
2462010
INSULATOR
US$ 24.85
2528438
CYLINDER HEAD AS
US$ 2,756.59
2959521
SWASHPLATE
US$ 946.33
View all 43 Hydraulic System parts →

Valve Assembly (38 parts)

1126523
INSERT
US$ 29.20
1143469
VALVE A
US$ 54.05
1318829
VALVE
US$ 13.10
1632437
LIFTER AS-
US$ 74.68
1799454
INSERT-V S
US$ 14.74
1874123
VALVE-INTA
US$ 50.82
1883122
VALVE - EX
US$ 50.56
1906115
SPRING-VAL
US$ 4.84
1906117
SPRING-VAL
US$ 6.55
1929213
VALVE-INLE
US$ 64.54
2035398
INSERT
US$ 1.06
2128917
INSERT-VLV
US$ 15.00
2128918
INSERT-VLV
US$ 8.91
2175701
DM BULK SE
US$ 3.93
2418382
VALVE-INTA
US$ 36.98
View all 38 Valve Assembly parts →

Light/Lamp (32 parts)

0672551
CLAMP
US$ 4.63
1356261
CLAMP
US$ 8.70
1371602
CLAMP AS.-
US$ 75.05
1419228
LAMP AS
US$ 14.63
1440367
CLAMP
US$ 12.10
1586072
CLAMP-COMP
US$ 96.04
1591503
CLAMP
US$ 7.23
1616963
CLAMP
US$ 0.31
1744895
CLAMP
US$ 24.81
1905341
CLAMP-STEP
US$ 31.05
1P4278
CLAMP
US$ 1.16
2375176
CLAMP-BAND
US$ 3.85
2413114
HORN
US$ 6.08
2419264
CLAMP-MUFF
US$ 18.62
2485576
CLAMP AS-V
US$ 116.47
View all 32 Light/Lamp parts →

Cooling System (29 parts)

1028418
CORE AS RA
US$ 2,973.39
1154237
PULLEY
US$ 129.70
1230858
PULLEY
US$ 73.13
1295096
PULLEY
US$ 67.61
1337023
PULLEY AS.
US$ 49.14
1488860
PULLEY-ALT
US$ 186.52
1531036
PULLEY-
US$ 318.75
1731498
PULLEY AS-
US$ 115.45
1860117
AFTERCOOLE
US$ 3,544.56
1903956
PULLEY
US$ 34.34
1922169
BELT
US$ 72.56
1949456
PULLEY-CSH
US$ 372.57
1949457
PULLEY-CSH
US$ 499.99
1979581
PULLEY
US$ 159.82
2082833
BELT
US$ 95.01
View all 29 Cooling System parts →

Repair Tools (29 parts)

1330969
SOCKET-CON
US$ 14.02
1516320
TOOL REMOV
US$ 2.58
1535043
DM SLEEVE
US$ 0.16
1863736
SOCKET-CON
US$ 0.94
2022787
HARDWR-KIT
US$ 22.50
2112101
SLEEVE-SPL
US$ 9.00
2399490
PMG KIT
US$ 1,918.17
2399491
PMG KIT
US$ 2,324.70
2465083
SLEEVE-SPA
US$ 19.32
3261006
KIT-PUMP
US$ 229.81
3478371
KIT-FASTER
US$ 67.46
3478373
KIT-FASTEN
US$ 364.14
3478397
KIT-FASTEN
US$ 21.10
3587876
SLEEVE-SPA
US$ 19.76
4599781
Repair Kit
Contact for price
View all 29 Repair Tools parts →

Engine Block (27 parts)

0897338
SLEEVE
US$ 9.16
1077331
BEARING 63
US$ 122.63
1105800
LINER
US$ 118.01
1550809
SEAL-LINER
US$ 5.99
1552793
SEAL-LINER
US$ 10.26
1608194
BEARING
US$ 29.15
1903562
LINER-CYLI
US$ 131.30
1961387
SLEEVE
US$ 59.94
1W8407
SLEEVE
US$ 13.47
2036090
BEARING-SL
US$ 12.50
2165583
BEARING-SL
US$ 31.04
2165584
BEARING-SL
US$ 31.04
2165585
BEARING-SL
US$ 31.04
2165586
BEARING-SL
US$ 17.15
2168193
CAMSHAFT A
US$ 1,716.73
View all 27 Engine Block parts →

Spring (27 parts)

0520512
RETAINER
US$ 4.04
1632459
SPRING
US$ 5.19
1L9049
SPRING
US$ 25.01
1L9067
SPRING
US$ 12.36
2080039
FASTENER A
US$ 5.04
2161598
SPRING-GUI
US$ 7.41
2418384
RETAINER
US$ 6.35
2423864
SPRING
US$ 5.66
2444500
SPRING
US$ 10.35
2N9421
SPRING
US$ 1.36
2S3992
SPRING
US$ 3.66
3045260
SPRING-GUI
US$ 7.41
3N1461
SPRING
US$ 6.36
3T9494
SPRING
US$ 2.04
4M1827
RETAINER
US$ 1.36
View all 27 Spring parts →

Sensor (25 parts)

1309811
SENSOR GP-
US$ 38.46
1611705
SENSOR GP
US$ 151.48
1656634
SENSOR GP
US$ 143.28
1978391
SENSOR
US$ 42.17
1978392
Sensor
Contact for price
1978393
SENSOR
US$ 154.61
1978394
SENSOR
US$ 154.26
2042518
SENSOR GP
US$ 124.96
2101747
SENSOR
US$ 154.26
2345012
SENSOR
Contact for price
2345013
Sensor
Contact for price
2366220
SENSOR
Contact for price
2366221
SENSOR
Contact for price
2392396
SENSOR
Contact for price
2399957
SENSOR GP
US$ 97.45
View all 25 Sensor parts →

Piston Assembly (21 parts)

1055137
PISTON
US$ 726.97
1613424
RING-PISTO
US$ 22.94
1663648
PIN-PISTON
US$ 38.48
1687211
RING PISTO
US$ 22.45
1730148
PIN-PISTON
US$ 42.87
1979392
RING-PISTO
US$ 22.45
1L9064
PISTON A
US$ 112.78
2137454
RING-PISTO
US$ 32.33
2382709
SKIRT-PIST
US$ 46.62
2651401
CROWN AS.-
US$ 169.06
2959518
PISTON AS
US$ 1,254.09
3472380
PISTON RING
US$ 22.94
3472381
PISTON RING
US$ 22.94
3472382
PISTON RING
US$ 22.94
3675160
BODY AS-PI
US$ 286.53
View all 21 Piston Assembly parts →

Hydraulic Pump (20 parts)

1052508
PUMP AS
US$ 100.24
1076916
PUMP G
US$ 815.03
1706116
PUMP GP-AU
US$ 648.64
1782357
PUMP GP-FU
US$ 161.65
2110546
PUMP GP-GE
US$ 900.32
2160038
CHECK NPR
US$ 21,747.36
2274298
PUMP GP
US$ 501.72
2274299
PUMP GP-WA
US$ 601.88
2274301
PUMP AS.-
US$ 512.15
2448481
PUMP GP
US$ 13,229.11
2544358
PUMP GP
US$ 1,894.07
2954778
PUMP GP
US$ 1,931.95
3173347
PUMP GP-SU
US$ 247.33
3190675
PUMP GP
US$ 1,756.30
3522080
Pump
Contact for price
View all 20 Hydraulic Pump parts →

Switch/Relay (19 parts)

1081478
VALVE G
US$ 68.71
1096507
SWITCH
US$ 67.07
1107884
SWITCH AS
US$ 35.17
1251302
SWITCH AS
US$ 68.43
1457028
SENSOR GP
US$ 70.65
1463504
SWITCH AS
US$ 98.50
1938570
SOLENOID A
US$ 189.78
2095581
SWITCH AS
US$ 78.28
2095582
SWITCH AS-
US$ 78.28
2145791
SWITCH
US$ 38.53
2266446
SWITCH
US$ 71.11
3179506
RELAY
US$ 316.35
3E0156
SWITCH A
US$ 60.95
3E7276
SWITCH AS-
US$ 66.95
3E7277
SWITCH A
US$ 66.95
View all 19 Switch/Relay parts →

Pin/Bushing (17 parts)

1261767
PIN
US$ 1.37
1330967
PIN-CONNEC
US$ 9.84
1863735
PIN-CONNEC
US$ 0.87
2605716
PIN-SPOOL
US$ 0.89
2K8467
PIN
US$ 1.90
3E0145
PIN KIT
US$ 15.38
3F9190
PIN
US$ 0.40
3N1462
PIN A
US$ 45.09
4H1641
PIN
US$ 0.68
6H3956
PIN
US$ 1.02
6L3969
PIN
US$ 4.64
6L3970
PIN
US$ 7.62
6L4016
PIN
US$ 11.40
6N4204
PIN
US$ 7.45
8N1542
PIN
US$ 6.19
View all 17 Pin/Bushing parts →

Seal (17 parts)

0335853
O RING
US$ 2.85
0336034
O-RING
US$ 4.90
0990187
O RING
US$ 1.95
2112134
RETAINER-S
US$ 7.06
2285827
RETAINER B
US$ 40.54
5L3487
COLLAR A
US$ 316.83
7J9108
SEAL
US$ 0.75
8C5237
SEAL-O-RIN
US$ 2.61
8L2779
O RING
US$ 2.88
8T2944
SEAL O RIN
US$ 2.48
8T7000
SEAL-FACE
US$ 2.03
8T9367
SEAL KIT
US$ 0.28
9L5854
BAND
US$ 5.19
9X4576
SEAL O RIN
US$ 17.50
9X7357
SEAL O RIN
US$ 2.44
View all 17 Seal parts →

FAQ

Are these genuine Caterpillar C9 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 C9 before dispatch and covered by a 12-month warranty.

How do I confirm the part number for my C9?
Match the part number on your old part, or send us your machine serial number — WSTPARTS verifies fitment free of charge.

Other Caterpillar models

CAT 320C CAT 320D CAT 3306 CAT 3516B CAT 3512 CAT 345D CAT 345B CAT C18 CAT 330D CAT C15 CAT 345C CAT 365B CAT 330C CAT 325C CAT 325D CAT 336D CAT G3508 CAT 3516C CAT G3616 CAT 3516 CAT 3412C CAT G3608 CAT C13 CAT C7 CAT 3406C CAT 3508C CAT 3512C CAT C175 CAT 3126B
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