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Caterpillar C15 Parts — Genuine & OEM Replacement Parts

3,231 part numbers
20 systems
12 months warranty

WSTPARTS supplies 3,231 genuine and high-quality OEM replacement parts for Caterpillar C15 equipment, covering 20 major systems including Bolt/Nut, Structure, Drivetrain, Electrical System, 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.

Bolt/Nut (544 parts)

0120380
WASHER
US$ 0.46
0138307
BOLT
US$ 3.86
0301193
SCREW
US$ 0.82
0309612
SCREW
US$ 0.22
0310215
BOLT
US$ 1.23
0313185
BOLT
US$ 15.73
0314155
NUT
US$ 0.21
0454065
SCREW
US$ 0.14
0863279
SCREW-MACH
US$ 0.63
0910081
SPACER
US$ 9.49
0950826
WASHER,TOO
US$ 0.16
0950939
RING,SNAP
US$ 6.03
0960192
WASHER
US$ 0.45
0983039
WASHER
US$ 0.26
0L0639
BOLT
US$ 0.92
View all 544 Bolt/Nut parts →

Structure (518 parts)

0341432
STRAP
US$ 1.89
0922467
BAR
US$ 21.12
1003098
COVER AS
US$ 86.38
1006648
BRACKET A
US$ 163.54
1013998
BRACKET A
US$ 34.21
1025828
COVER AS
US$ 343.01
1025861
PLATE THRU
US$ 43.87
1029089
COVER
US$ 15.07
1055138
HOUSING
US$ 492.12
1067687
HOUSING A
US$ 222.99
1082515
COVER
US$ 3.40
1083561
PLATE
US$ 65.40
1084744
HOUSING
US$ 4,232.07
1084758
HOUSING AS
US$ 4,912.12
1089656
STRAP
US$ 4.70
View all 518 Structure parts →

Drivetrain (301 parts)

0041964
SEAL
US$ 2.55
0091436
BEARING
US$ 4.84
0220234
COUPLING
US$ 30.97
0336028
O-RING
US$ 3.78
0336039
O-RING
US$ 2.88
0617539
SEAL
US$ 5.34
0617540
SEAL O RIN
US$ 8.07
0618639
SEAL-O-RIN
US$ 4.00
0694269
STEM
US$ 22.85
0990321
OIL SEAL
US$ 78.81
1013125
GASKET
US$ 5.21
1018468
BEARING
US$ 43.41
1075769
SEAL O RIN
US$ 5.31
1085803
SEAL-O-RIN
US$ 2.66
1087930
BEARING AS
US$ 83.36
View all 301 Drivetrain parts →

Electrical System (291 parts)

0301707
TERMINAL
US$ 2.24
0307937
CONNECTOR
US$ 29.03
0308188
CONNECTOR
US$ 4.68
0308189
CONNECTOR
US$ 9.91
0308194
CONNECTOR
US$ 4.14
0318759
CONNECTOR
US$ 11.41
0319295
TERMINAL
US$ 12.58
0680710
PLUG
US$ 7.54
0813801
PLUG
US$ 60.83
0874772
PLUG
US$ 4.17
0S0509
CAP SCREW
US$ 0.21
0S1566
CAPSCREW
US$ 1.14
0S1571
CAP SCREW
US$ 0.49
0S1573
CAP SCREW
US$ 1.87
0S1577
CAP SCREW
US$ 1.76
View all 291 Electrical System parts →

Fitting (213 parts)

0007246
ELBOW
US$ 22.20
0043099
NIPPLE
US$ 9.06
0047270
NIPPLE
US$ 8.11
0047626
NIPPLE
US$ 6.59
0053969
ELBOW
US$ 52.73
0054362
ELBOW
US$ 9.58
0065490
ELBOW
US$ 13.56
0086325
ELBOW
US$ 90.63
0300709
ELBOW
US$ 15.40
0307943
ELBOW
US$ 9.66
0307946
ELBOW
US$ 3.19
0307949
ELBOW
US$ 14.71
0307962
ELBOW
US$ 9.61
0312716
ELBOW
US$ 22.13
0328487
ELBOW
US$ 35.77
View all 213 Fitting parts →

Hydraulic System (68 parts)

1025829
ADAPTER AS
US$ 171.67
1288065
BREAKER AS
US$ 188.49
1429427
SWASHPLATE
US$ 482.26
1432933
FITTING
US$ 15.91
1435853
BREAKER
US$ 3,742.50
1437610
BREAKER
US$ 4,879.73
1580344
ADAPTER AS
US$ 655.68
1598524
ADAPTER AS
US$ 119.30
1687317
SWASHPLATE
US$ 426.69
1712208
BREAKER AS
US$ 42.18
1712212
BREAKER AS
US$ 138.70
1G9176
SWASHPLATE
US$ 1,145.35
1P9328
FITTING
US$ 9.29
2008577
BREAKER AS
US$ 22.79
2190640
ADAPTER AS
US$ 773.62
View all 68 Hydraulic System parts →

Wiring Harness (60 parts)

1051797
MOUNT-WIRE
US$ 1.74
1093038
WIRE END
US$ 0.26
1233202
CABLE-STRA
US$ 0.26
1325559
WIRE AS
US$ 26.54
1435968
CABLE AS
US$ 63.16
1532707
CM E-CABLE
US$ 0.19
1886181
CABLE AS.
US$ 61.36
1886183
CABLE AS.
US$ 45.68
1890852
HARNESS AS
US$ 16.82
1944613
HARNESS AS
US$ 226.94
1945226
HARNESS AS
US$ 4.48
1951344
HARNESS AS
US$ 182.83
1981407
WIRE AS.
US$ 85.19
2098441
HARNESS AS
US$ 62.29
2128255
HARNESS AS
US$ 50.90
View all 60 Wiring Harness parts →

Valve Assembly (45 parts)

0054273
INSERT
US$ 20.39
1124036
VALVE
US$ 46.70
1502557
COVER-VALV
US$ 117.65
1527582
INSERT-VAL
US$ 34.43
1537023
VALVE-INLE
US$ 61.96
1537024
VALVE-EXHA
US$ 56.30
1753617
INSERT-SEA
US$ 25.12
1799454
INSERT-V S
US$ 14.74
1871325
COVER AS-V
US$ 157.01
1929213
VALVE-INLE
US$ 64.54
1964233
VALVE GP-S
US$ 1,210.60
1G7407
VALVE A
US$ 256.90
2035398
INSERT
US$ 1.06
2102521
Assembly
Contact for price
2113122
SPRING-VAL
US$ 6.64
View all 45 Valve Assembly parts →

Hydraulic Hose (39 parts)

1091145
CLAMP HOSE
US$ 1.89
1246257
CLAMP HOSE
US$ 1.42
1609878
HOSE
US$ 18.02
1616958
CLIP-HOSE
US$ 0.85
1616960
HOSE
US$ 33.96
1653185
HOSE A-XT
US$ 177.01
2022173
HOSE
US$ 36.06
2026996
HOSE AS
US$ 116.30
2078128
HOSE AS.
US$ 31.88
2078130
HOSE AS-FU
US$ 73.17
2303396
HOSE
US$ 27.58
2315219
HOSE AS
US$ 85.24
2320770
HOSE
US$ 59.16
2350313
HOSE
US$ 12.14
2404863
HOSE
US$ 14.30
View all 39 Hydraulic Hose parts →

Spring (39 parts)

0520512
RETAINER
US$ 4.04
1082858
SPRING
US$ 16.37
1177296
SPRING PAS
US$ 1.60
1361107
RETAINER
US$ 23.54
1429426
SPRING A
US$ 54.72
1429438
SPRING COI
US$ 10.45
1682197
SPRING
US$ 4.00
1683381
SPRING
US$ 19.62
1G9178
SPRING
US$ 90.72
1L9049
SPRING
US$ 25.01
1L9067
SPRING
US$ 12.36
2022342
SPRING
US$ 7.85
2099770
RETAINER A
US$ 194.65
2110640
SPRING-REL
US$ 1.26
2390770
RETAINER
US$ 162.93
View all 39 Spring parts →

Engine Block (35 parts)

1005421
SEAL GP
US$ 72.55
1102220
SEAL O RIN
US$ 9.38
1425868
SEAL GP-CS
US$ 79.48
1426217
SEAL O RIN
US$ 20.43
1427072
SEAL-O-RIN
US$ 5.51
1979322
LINER
US$ 131.44
2192384
SENSOR GP-
US$ 258.89
2243246
BEARING-RO
US$ 28.97
2270838
Shaft
Contact for price
2274239
SLEEVE
US$ 17.33
2347900
CAMSHAFT
US$ 1,749.38
2349425
LINK-TERMI
US$ 2.69
2382700
LINER
US$ 131.50
2396139
CAMSHAFT
US$ 1,749.38
2L7160
SLEEVE
US$ 427.76
View all 35 Engine Block parts →

Light/Lamp (34 parts)

0672551
CLAMP
US$ 4.63
0951387
CLAMP
US$ 5.06
1356261
CLAMP
US$ 8.70
1419228
LAMP AS
US$ 14.63
1440367
CLAMP
US$ 12.10
1591503
CLAMP
US$ 7.23
1616963
CLAMP
US$ 0.31
1724702
CLAMP
US$ 1.07
1744895
CLAMP
US$ 24.81
1P4278
CLAMP
US$ 1.16
1S4577
CLAMP
US$ 20.76
2094573
CLAMP-T'BO
US$ 6.59
2205619
CLAMP-EXHA
US$ 12.36
2413114
HORN
US$ 6.08
2473393
CLAMP AS-V
US$ 66.77
View all 34 Light/Lamp parts →

Cooling System (31 parts)

1230791
PULLEY
US$ 70.47
1337023
PULLEY AS.
US$ 49.14
1731498
PULLEY AS-
US$ 115.45
1974567
BELT
US$ 104.10
1W1456
PULLEY
US$ 72.60
2002279
TIGHTENER-
US$ 227.91
2249775
PULLEY AS
US$ 149.21
2362314
PULLEY AS
US$ 135.02
2553016
V-BELT
US$ 19.35
2685705
PULLEY
US$ 847.14
2776220
CORE AS.
US$ 4,763.87
2776221
CORE AS.
US$ 3,545.01
2969803
CORE AS.
US$ 3,538.41
2969808
CORE AS.
US$ 3,519.02
3109592
BELT
US$ 32.33
View all 31 Cooling System parts →

Switch/Relay (28 parts)

1096507
SWITCH
US$ 67.07
1251303
SWITCH AS
US$ 66.95
1339405
SWITCH AS
US$ 67.40
1434478
RELAY
US$ 31.45
1457028
SENSOR GP
US$ 70.65
1655970
SWITCH A
US$ 63.75
1728660
SWITCH AS-
US$ 137.28
2069427
RELAY
US$ 7.58
2095582
SWITCH AS-
US$ 78.28
2145791
SWITCH
US$ 38.53
2236470
RELAY
US$ 22.79
2266446
SWITCH
US$ 71.11
2428300
SWITCH AS.
US$ 96.26
2428301
SWITCH AS.
US$ 92.43
2509377
VALVE AS
US$ 168.57
View all 28 Switch/Relay parts →

Piston Assembly (26 parts)

1055137
PISTON
US$ 726.97
1429425
PISTON A
US$ 72.13
1644187
RING-PSTN-
US$ 35.62
1683384
PISTON AS-
US$ 54.74
1687296
PIN-PISTO
US$ 61.72
1749994
PISTON-CON
US$ 119.79
1765749
RING-PSTN-
US$ 32.33
1807350
PIN-PISTON
US$ 60.87
1979374
CROWN AS.
US$ 189.35
1L9064
PISTON A
US$ 112.78
2038493
PISTON AS
US$ 435.00
2332430
PISTON
US$ 1,325.41
2370194
RING-PISTO
US$ 37.39
2380294
RING-PISTO
US$ 35.62
2382712
SKIRT-PIST
US$ 52.11
View all 26 Piston Assembly parts →

Seal (26 parts)

0335853
O RING
US$ 2.85
0336033
O-RING
US$ 3.16
0336042
O-RING
US$ 3.22
1677715
RETAINER-S
US$ 62.33
2302569
RETAINER -
US$ 4.20
2K4472
O RING
US$ 4.58
4B4716
COLLAR A
US$ 154.97
5E8767
O RING
US$ 9.25
5E8769
O RING
US$ 10.04
5E8771
O RING
US$ 16.15
5L3487
COLLAR A
US$ 316.83
6F6580
COLLAR A
US$ 655.37
6V6923
RING BACK
US$ 3.78
7W5733
GASKET
US$ 9.00
7Y5219
SEAL O RIN
US$ 0.80
View all 26 Seal parts →

Pin/Bushing (25 parts)

0778353
PIN
US$ 2.71
1261638
PIN
US$ 12.08
1261767
PIN
US$ 1.37
1676805
PIN
US$ 1.19
1683379
PIN
US$ 6.82
1997051
PIN-SPECIA
US$ 50.80
1G9196
PIN
US$ 0.27
1H1200
PIN
US$ 1.28
2L3605
PIN
US$ 0.67
3H9575
PIN
US$ 37.88
3N1462
PIN A
US$ 45.09
3N8123
PIN
US$ 22.56
4N0684
PIN
US$ 4.46
5B5821
PIN
US$ 5.05
5P0372
PIN
US$ 0.21
View all 25 Pin/Bushing parts →

Sensor (24 parts)

1309811
SENSOR GP-
US$ 38.46
1918303
SENSOR G-S
US$ 130.06
1978391
SENSOR
US$ 42.17
1978392
Sensor
Contact for price
2016617
SENSOR GP-
US$ 130.06
2142484
Sensor
Contact for price
2345012
SENSOR
Contact for price
2345013
Sensor
Contact for price
2392395
SENSOR
Contact for price
2392396
SENSOR
Contact for price
2393478
SENSOR GP-
US$ 151.48
2395674
Sensor
Contact for price
2395928
Sensor
Contact for price
2399957
SENSOR GP
US$ 97.45
2490096
SENSOR
US$ 154.29
View all 24 Sensor parts →

Bushing (23 parts)

1237559
BUSHING
US$ 46.35
1261477
BUSHING
US$ 8.88
1M9968
BUSHING
US$ 4.11
2721900
BUSHING
US$ 12.75
3542859
Spacer
Contact for price
3B7257
BUSHING
US$ 5.19
3B7764
BUSHING
US$ 3.96
4D3967
BUSHING
US$ 9.50
4M1896
BUSHING
US$ 2.39
4P8021
VALVE A
US$ 62.23
5E8743
BUSHING
US$ 54.99
5H5744
BUSHING
US$ 8.28
6B4661
BUSHING
US$ 7.03
6B5072
BUSHING
US$ 4.13
6B9081
BUSHING
US$ 8.64
View all 23 Bushing parts →

Drive Shaft (21 parts)

1095165
SHAFT CHG
US$ 226.74
1451824
SHAFT
US$ 347.30
1515966
STUBSHAFT
US$ 170.34
1583416
STUBSHAFT
US$ 135.49
1687319
SEAL-SHAFT
US$ 33.39
1972850
SHAFT
US$ 443.77
1974971
STUBSHAFT
US$ 575.02
1W7238
SHAFT A
US$ 341.39
1W7239
SHAFT A
US$ 264.43
2015382
SEAL-SHAFT
US$ 43.24
3N4899
SHAFT
US$ 4,029.16
3N6059
SHAFT
US$ 1,806.35
3N6537
SHAFT
US$ 1,412.81
3N9180
SHAFT-CLUT
US$ 1,865.76
4B4754
SHAFT
US$ 45.90
View all 21 Drive Shaft parts →

FAQ

Are these genuine Caterpillar C15 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 C15 before dispatch and covered by a 12-month warranty.

How do I confirm the part number for my C15?
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 C18 CAT 3516B CAT 345C CAT 345B CAT 3512 CAT 365B CAT 3306 CAT 330C CAT 325C CAT 330D CAT G3508 CAT G3616 CAT 325D CAT 3412C CAT 3516C CAT G3608 CAT C9 CAT 336D CAT 3056 CAT C175 CAT 3516 CAT 3406C CAT 3616 CAT C7 CAT C44 CAT C27 CAT C13 CAT 3406E CAT C32
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