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CAT 320C genuine parts — Genuine & OEM Replacement Parts

5,247 part numbers
20 systems
12 months warranty

WSTPARTS supplies 5,247 genuine and high-quality OEM replacement parts for Caterpillar 320C equipment, covering 20 major systems including Bolt/Nut, Structure, Drivetrain, Fitting, Hydraulic Hose. 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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hydraulic pump for CAT 320C

No "hydraulic pump" parts found for CAT 320C. Browse all parts below.

Bolt/Nut (930 parts)

0120380
WASHER
US$ 0.46
0300167
RING
US$ 3.55
0338248
CLIP
US$ 1.87
0816344
SPACER
US$ 13.39
0855864
RING CUSH
US$ 25.29
0856448
SCREW
US$ 0.36
0856719
SHIM
US$ 0.48
0856720
SHIM
US$ 0.48
0857084
BOLT
US$ 4.33
0857269
WASHER
US$ 0.41
0857913
BOLT
US$ 0.72
0858091
BOLT
US$ 1.14
0858604
RING-RETAI
US$ 5.21
0858605
RING
US$ 121.73
0859195
SCREW
US$ 0.48
View all 930 Bolt/Nut parts →

Structure (916 parts)

0046683
ADAPTER
US$ 2.47
0857080
LEVER
US$ 135.69
0859197
COVER BRG
US$ 52.80
0859222
ADAPTER
US$ 11.33
0859259
KEY
US$ 0.69
0859652
KEY
US$ 0.72
0859653
KEY
US$ 0.69
0859832
COVER
US$ 40.26
0859936
LEVER
US$ 54.72
0860950
BRACKET A
US$ 25.91
0874786
ADAPTER
US$ 25.51
0875771
BRACKET
US$ 41.78
0875838
PLATE
US$ 14.30
0875840
PLATE
US$ 14.47
0875841
PLATE
US$ 16.52
View all 916 Structure parts →

Drivetrain (405 parts)

0304606
SEAL-O-RIN
US$ 2.35
0856723
BEARING
US$ 25.17
0857540
SEAL O RIN
US$ 5.67
0859655
GASKET
US$ 0.72
0861345
SEAL
US$ 33.94
0875317
ROD
US$ 45.53
0931433
SEAL,DUST
US$ 9.70
0931434
SEAL,DUST
US$ 11.46
0940876
SEAL
US$ 4.25
0950410
BEARING
US$ 10.62
0950863
PIN,SPLIT
US$ 0.74
0951519
O-RING
US$ 0.86
0951527
O-RING
US$ 1.43
0951528
O-RING
US$ 1.44
0951538
O-RING
US$ 1.95
View all 405 Drivetrain parts →

Fitting (395 parts)

0875709
BELLOWS
US$ 36.60
0875775
PIPE
US$ 51.60
0941920
PIPE,HOLDE
US$ 58.98
0958638
CHECK NPR
US$ 0.22
0961523
GUIDE
US$ 56.03
0964754
CHECK NPR
US$ 14.52
0966465
JOINT
US$ 152.60
1021120
ELBOW A
US$ 389.17
1021291
ELBOW A
US$ 389.17
1038177
ADAPTER
US$ 57.58
1059526
ADAPTER
US$ 1.28
1106821
NIPPLE
US$ 52.71
1119959
PLUG
US$ 3.23
1119998
PLUG
US$ 7.84
1136479
FLANGE
US$ 51.26
View all 395 Fitting parts →

Hydraulic Hose (346 parts)

0874402
HOSE A
US$ 42.39
0874411
HOSE A
US$ 41.80
0874441
HOSE A
US$ 43.08
0874480
HOSE A
US$ 50.23
0874503
HOSE A
US$ 35.44
0874531
HOSE AS
US$ 43.55
0874532
HOSE A
US$ 40.36
0874534
HOSE A
US$ 52.43
0874535
HOSE A
US$ 96.64
0875303
HOSE A
US$ 68.68
0875618
HOSE A
US$ 243.00
0875758
HOSE A
US$ 33.68
0875760
HOSE A
US$ 36.51
0875762
HOSE A
US$ 38.73
0875765
HOSE A
US$ 38.45
View all 346 Hydraulic Hose parts →

Electrical System (227 parts)

0859199
PLUG
US$ 6.03
0859206
NUT CAP
US$ 5.44
0859211
PLUG
US$ 5.67
0859914
CAPSULE
US$ 18.40
0862746
CONNECTOR
US$ 21.53
0873533
CAP
US$ 6.99
0941882
PLUG
US$ 5.22
0941900
PLUG
US$ 15.63
0947235
CAP
US$ 1.94
0949725
PLUG,AIR
US$ 1.54
0950965
PLUG,TAPER
US$ 5.93
0952011
CAP
US$ 8.64
0961421
PLUG
US$ 49.19
0961445
PLUG TAPER
US$ 1.96
0961628
PLUG
US$ 27.83
View all 227 Electrical System parts →

Engine Block (135 parts)

0874970
SLEEVE
US$ 1.55
0875764
SLEEVE
US$ 58.17
0875802
LINK
US$ 504.23
0875803
LINK A
US$ 679.97
0969505
SLEEVE
US$ 9.52
10R2602
CYL HEAD G
US$ 3,399.21
1277826
LINER
US$ 4.53
1352349
SLEEVE
US$ 30.51
1372292
SLEEVE
US$ 19.57
1535298
SLEEVE
US$ 75.44
1535309
SLEEVE
US$ 23.87
1566576
LINER
US$ 24.50
1652969
LINER
US$ 15.41
1652978
LINER
US$ 58.30
1652985
LINER
US$ 61.28
View all 135 Engine Block parts →

Spring (100 parts)

0856447
RETAINER
US$ 24.76
0874707
SPRING
US$ 19.90
0875166
SPRING
US$ 6.18
0930543
RETAINER
US$ 54.88
0952490
SPRING
US$ 1.28
0956639
SPRING
US$ 5.29
0957380
SPRING 9
US$ 3.57
0961598
SPRING
US$ 3.55
0963978
SPRING
US$ 4.58
0965915
RETAINER
US$ 18.99
0967928
SPRING
US$ 7.18
0968310
SPRING
US$ 6.69
0968336
SPRING
US$ 1.19
0968356
SPRING
US$ 13.88
0993506
GAS SPRING
US$ 95.14
View all 100 Spring parts →

Wiring Harness (97 parts)

0857329
SPACER
US$ 9.45
0993645
CABLE
US$ 3.13
1114829
WIRE AS
US$ 6.61
1138490
FUSE
US$ 0.81
1160080
CABLE AS
US$ 41.64
1160227
HARNESS A
US$ 19.22
1400923
HARNESS AS
US$ 14.78
1566554
CABLE A
US$ 257.74
1613088
HARNESS AS
US$ 11.79
1613089
HARNESS AS
US$ 101.41
1636623
WIRING GP
US$ 3,298.17
1636740
HARNESS A
US$ 532.74
1636749
HARNESS A
US$ 615.91
1636750
HARNESS AS
US$ 21.65
1636751
CABLE A
US$ 12.15
View all 97 Wiring Harness parts →

Seal (94 parts)

0336036
O-RING
US$ 5.24
0856449
PACKING
US$ 2.58
0931342
O-RING
US$ 5.60
0931344
O-RING
US$ 7.34
0931476
PACKING,RO
US$ 21.08
0949672
O-RING BRE
US$ 1.02
0949980
PACKING
US$ 4.13
0951511
O-RING
US$ 0.67
0951514
O-RING
US$ 0.67
0951517
O-RING
US$ 0.82
0951531
O-RING
US$ 1.61
0951543
O-RING
US$ 2.03
0951547
O-RING
US$ 2.28
0951572
O-RING
US$ 0.62
0951575
O-RING
US$ 0.65
View all 94 Seal parts →

Pin/Bushing (72 parts)

0857083
PIN
US$ 6.81
0859513
PIN
US$ 1.42
0860523
PIN
US$ 291.93
0875805
PIN
US$ 539.68
0875806
PIN
US$ 352.93
0875845
PIN
US$ 468.12
0950843
PIN,SPLIT
US$ 0.06
0950879
PIN,SPRING
US$ 4.12
0950882
PIN,SPRING
US$ 0.82
0950886
PIN,SPRING
US$ 1.42
0950891
PIN,SPRING
US$ 2.17
0951321
PIN,CLEVIS
US$ 7.30
0952623
PIN,LOCK
US$ 6.87
0955564
PIN,RUBBER
US$ 8.10
0963780
PIN
US$ 5.91
View all 72 Pin/Bushing parts →

Hydraulic System (70 parts)

0857356
FITTING
US$ 22.55
1087516
FITTING
US$ 15.27
1163601
VALVE GP - PILOT RELIEF ..........................................................
Contact for price
1211809
PLATE
US$ 133.03
1241212
FITTING
US$ 208.75
1252956
COOLER GP - ENGINE OIL.........................................................
Contact for price
1317501
ADAPTER AS
US$ 34.90
1484695
DRIVE GP
US$ 15,374.22
1535242
VALVE GP
US$ 882.35
1566555
STRIKER A
US$ 44.70
1566599
STRIKER
US$ 26.85
1588135
GUIDE
US$ 14.33
1588985
MOTOR GP
US$ 6,407.66
1636709
RADIO (AM/FM)
US$ 550.02
1640532
CONTROL GP
US$ 246.63
View all 70 Hydraulic System parts →

Switch/Relay (53 parts)

0942080
RELAY,SAFE
US$ 143.83
1051321
VALVE G
US$ 98.55
1060107
SWITCH AS
US$ 212.35
1095152
VALVE G
US$ 108.76
1160114
SWITCH AS
US$ 78.17
1176306
SWITCH
US$ 8.42
1232430
VALVE G
US$ 159.62
1251302
SWITCH AS
US$ 68.43
1276844
VALVE G
US$ 1,151.15
1282134
CHECK NPR
US$ 19.58
1284411
VALVE A
US$ 15.03
1296466
SWITCH A
US$ 47.13
1298034
VALVE AS
US$ 142.60
1352364
SWITCH A
US$ 255.96
1495050
RELAY
US$ 11.46
View all 53 Switch/Relay parts →

Valve Assembly (47 parts)

0874742
VALVE
US$ 22.46
1076371
VALVE
US$ 54.44
1195365
VALVE
US$ 56.74
1252927
VALVE
US$ 50.87
1318901
VALVE
US$ 54.44
1352351
INSERT
US$ 83.21
1400674
VALVE
US$ 430.06
1535286
VALVE
US$ 54.94
1535292
VALVE
US$ 59.14
1535299
VALVE
US$ 45.09
1535313
VALVE GP-R
US$ 1,010.85
1588251
VALVE GP-S
US$ 1,190.00
1659549
VALVE GP-S
US$ 2,452.83
1710037
VALVE
US$ 11.08
1710198
VALVE GP-S
US$ 1,025.83
View all 47 Valve Assembly parts →

Hydraulic Valve (47 parts)

0952489
VALVE,CHEC
US$ 2.86
0952927
VALVE,FILL
US$ 19.61
1077516
VALVE GP-B
US$ 17,712.37
1092667
VALVE GP
US$ 82.76
1163600
VALVE G
US$ 209.94
1234750
VALVE-CHK
US$ 97.91
1298030
VALVE GP
US$ 528.07
1298031
VALVE GP
US$ 84.49
1373718
VALVE GP
US$ 3,744.39
1528346
VALVE GP-S
US$ 192.56
1588117
CHECK NPR
US$ 3,111.91
1588200
CHECK NPR
US$ 38,675.08
1588201
CHECK NPR
US$ 19,206.35
1588250
VALVE GP-P
US$ 1,185.75
1589085
VALVE GP
US$ 741.29
View all 47 Hydraulic Valve parts →

Piston Assembly (43 parts)

0874757
PISTON
US$ 27.60
0947134
PIN,PISTON
US$ 10.78
0961055
RING BACKU
US$ 16.89
0963964
RING BACKU
US$ 16.61
0964378
RING BACKU
US$ 24.09
0969503
PINION
US$ 6.53
0995575
RING BACKU
US$ 48.43
1052582
PISTON
US$ 442.78
1052593
PISTON
US$ 489.71
1140491
PISTON A
Contact for price
1140517
PISTON
US$ 44.82
1140709
PISTON
US$ 536.08
1251552
PISTON
US$ 314.43
1252942
PISTON
US$ 12.04
1352350
RING-PISTO
US$ 6.50
View all 43 Piston Assembly parts →

Light/Lamp (42 parts)

0931290
CLAMP,SING
US$ 27.76
0931291
CLAMP,SING
US$ 35.09
0931294
CLAMP,DOUB
US$ 29.29
0947583
CLAMP ASSY
US$ 43.41
0949581
CLAMP
US$ 2.93
0949596
CLAMP
US$ 2.43
0949597
CLAMP
US$ 2.43
0951386
CLAMP
US$ 1.56
0951388
CLAMP
US$ 1.33
0965766
CLAMP
US$ 31.54
1440367
CLAMP
US$ 12.10
1515334
CLAMP
US$ 1.74
1532521
LAMP GP
US$ 75.88
1532522
LAMP G
US$ 73.94
1532523
LAMP G.
US$ 75.88
View all 42 Light/Lamp parts →

Repair Tools (31 parts)

0935150
SOCKET
US$ 16.09
1210987
SOCKET
US$ 18.61
1261768
SOCKET
US$ 1.70
1706888
TOOL
US$ 4.82
1777716
COVER KIT
US$ 244.88
1785654
COVER KIT
US$ 160.55
1786600
PULLER
US$ 21.59
1858125
RISER KIT
US$ 1,438.08
1858143
COVER KIT
US$ 245.17
1863736
SOCKET-CON
US$ 0.94
1U7563
WRENCH
US$ 0.81
1U7564
WRENCH
US$ 1.09
2254690
REPAIR KIT
US$ 424.01
2254691
REPAIR KIT
US$ 420.95
2254697
REPAIR KIT
US$ 956.01
View all 31 Repair Tools parts →

Filter System (30 parts)

1141398
GAGE
US$ 44.58
1352402
GAGE
US$ 50.49
1566473
GLASS-LOWE
US$ 180.67
1588987
FILTER GP-
US$ 287.98
1589005
FILTER G
US$ 2,000.08
1601993
GAGE
US$ 58.57
1733434
FILTER GP
US$ 3,450.63
1733435
SCREEN GP
US$ 292.61
1733511
FILTER G
US$ 553.99
1785479
FILTER
US$ 91.40
1786563
STRAINER
US$ 107.49
1838104
SCREEN AS
US$ 169.54
1838105
SCREEN AS
US$ 189.21
1838117
SCREEN AS
US$ 87.75
1882084
FILTER G O
US$ 139.62
View all 30 Filter System parts →

Drive Shaft (29 parts)

0941509
SHAFT,PLAN
US$ 74.44
0996145
CAM SHAFT
US$ 30.66
1163522
DRIVE-SCRE
US$ 2.04
1189864
SHAFT
US$ 39.33
1244009
SHAFT
US$ 9.23
1275938
SHAFT A
US$ 489.65
1275939
SHAFT A
US$ 427.42
1484634
SHAFT-PLAN
US$ 101.10
1484644
DRIVE GP
US$ 14,731.70
1484679
DRIVE GP
US$ 21,806.28
1733391
SHAFT-DRIV
US$ 365.51
1733406
SHAFT
US$ 381.64
1733440
SHAFT
US$ 550.16
1786635
SHAFT
US$ 69.73
1858169
SHAFT
US$ 51.60
View all 29 Drive Shaft parts →

FAQ

Are these genuine Caterpillar 320C 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 320C before dispatch and covered by a 12-month warranty.

How do I confirm the part number for my 320C?
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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