
Caterpillar 321B Excavator Parts
New Aftermarket, Used and Rebuilt 321B Parts
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Showing All Parts (134) for Caterpillar 321B Excavator

148-4696
- Part #: 148-4696
- Weight: 751.00
- Fits Machine(s): 318C, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320L, 323D LN, 323DL, 320BL, 320B, 320D RR, 320D2GC, 320E LRR, 320E, 321B, 321C, 321D CR, 321D LCR, 322BL, 322B, 322L, 323D
- Category(s): Final Drives

320//322/325//330b Travel Motor with Brake Valve
- Part #: 1077028
- Weight: 168.00
- Fits Machine(s): 318, 320BL, 320B, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320E, 320L, 321B, 321D CR, 322BL, 322B, 322L, 323D LN, 323DL, 315C, 320D RR, 320D2GC, 320E LRR, 321C, 321D LCR, 323D
- Category(s): Final Drives

320c Trk Adj Gr
- Part #: 1453027
- Weight: 259.00
- Fits Machine(s): 315C, 321B, 320C, 319C, 318C
*Sample Image Shown

320c Trk Adj Gr
- Part #: 145-3028
- Weight: 298.00
- Fits Machine(s): 315C, 321B, 320C, 319C, 318C
- Category(s): Undercarriages

320c Trk Adj Gr
- Part #: 145-3039
- Weight: 298.00
- Fits Machine(s): 315C, 321B, 320C, 319C, 318C

Alternator
- Part #: 5I8085
- Weight: 16.00
- Fits Machine(s): 311, 320B, 320B L, 910G, 321B, 320N, 320C FM, 320C, 320B U, 315B FM L, 315, 318B, 320 L, 319C, 318C, 315C, 315B, 314C, 312C L, 312C, 312B, 312, 311C, 311B
- Category(s): Engines & Engine Parts

Assembled Cylider Head, Fits Engine Model: 3066 (two Heads)
- Part #: 5I7751
- Weight: 0.10
- Fits Machine(s): 320, 321B, 320N, 320B U, 320B L, 320B FM LL, 320B, 320 L, 320L
- Category(s): Engines & Engine Parts

Bearing, Roller
- Part #: 941542
- Weight: 0.60
- Fits Machine(s): 311C, 320D L, 320D GC, 322, 321D LCR, 321C, 321B, 320N, 320D RR, 320D LRR, 320D, 320C L, 320D FM, 320C FM, 320 L, 319D L, 320B, 319D LN, 319D, 320C, 319C, 318D L, 318C, 318B, 315D L, 315C

Bearing, Sleeve
- Part #: 137-2919
- Weight: 3.00
- Fits Machine(s): 315B, 345B II, M315, M318, 330C L, 330B L, 330D L, 325B L, 325C L, 322B L, 321C, 320C FM, 322B LN, 322B, 321B, 320C, 320B, 318C, 318B, 315C

Bearing, Sleeve
- Part #: 163-3749
- Weight: 2.00
- Fits Machine(s): 315C, 385B, 330D L, 365B II, 345B II, 325C L, 325C, 322C, 325C FM, 322C FM, 321C, 321B, 320C FM, 320C, 320B, 318C

Bearing, Sleeve
- Part #: 240-2914
- Weight: 3.30
- Fits Machine(s): 318C, 321C, 324D FM, 323E L, 323D LN, 321D LCR, 324D, 323D2 L, 323D L, 322C, 320E L, 321B, 320E RR, 320E LRR, 320E, 320D2 GC, 320D L, 320D2 L, 320D2, 320D GC, 320D, 320C, 320B, 319C, 318E L

Brg-sleeve
- Part #: 1052575
- Weight: 0.42
- Fits Machine(s): 320B FM LL, 324E L, 330C L, 326D L, 375, 328D LCR, 325C L, 325C, 325B, 324D L, 324D, 322C, 324E, 322B, 321D LCR, 321B, 320E L, 322, 321C, 320E RR, 320E, 320D, 320C FM, 320C, 320B

Bushing (idler Gear), Fits Engine Model: 3064, 3066
- Part #: 5I7542
- Weight: 0.13
- Fits Machine(s): 311B, 323D L, 321B, 320D LRR, 320C L, 320C, 320 L, 321C, 320D, 320C FM, 320B, 319C, 318C, 314C, 312C L, 312C, 311C
- Category(s): Engines & Engine Parts

Cat Air Filter
- Part #: 4L9851
- Weight: 3.60
- Fits Machine(s): 320B L, 320E, 320E LRR, 321B, 321C, 320E RR, 320E L, 320D2 L, 320D2 GC, 320D2, 320D RR, 320D LRR, 320D L, 320D FM RR, 320D, 320D LN, 320D GC, 320D FM, 320C L, 320C FM, 320C, 320B U, 320B

Caterpillar Bushing
- Part #: 143-3841
- Weight: 2.00
- Fits Machine(s): 318C, TK1051, M320, 345B II, 330B L, 325B L, 345B L, 330C, 325C, 322C, 321C, 321B, 320C, 320B

Caterpillar Crank
- Part #: 1253005
- Weight: 140.00
- Fits Machine(s): 318C, 323D L, 320N, 320D, 320C FM, 321C, 321B, 320D LRR, 320C L, 320C, 320B L, 320B, 320, 319C

Clamp Assy
- Part #: 947583
- Weight: 1.14
- Fits Machine(s): 315D L, 321B, 320D RR, 321D LCR, E120, 323D L, E140, 323D LN, 321C, 320D FM, 320D L, 320D FM RR, 320D LRR, 320C L, 320C, 320D, 320C FM, 320B, 319D LN, 319D L, 319D, 319C, 318D L, 318C

Complete Final Drive (Planetary/Travel) with Motor
- Fits Machine(s): 321B
- Category(s): Final Drives

Complete Final Drive (planetary/travel Drive) with Motor
- Part #: 135-6179
- Weight: 751.00
- Fits Machine(s): 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 320E, 321B, 321C, 321D CR, 321D LCR, 322BL, 322B, 322L, 323D
- Category(s): Final Drives

Complete Final Drive (planetary/travel Drive) with Motor
- Part #: 270-8170
- Weight: 751.00
- Fits Machine(s): 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 320E, 321B, 321C, 321D CR, 321D LCR, 322BL, 322B, 322L, 323D
- Category(s): Final Drives

Complete Final Drive (planetary/travel Drive) with Motor
- Part #: 353-0609
- Weight: 751.00
- Fits Machine(s): 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 320E, 321B, 321C, 321D CR, 321D LCR, 322BL, 322B, 322L, 323D, 323EL, 323E
- Category(s): Final Drives

Drive Motor ONLY
- Part #: 216-0043
- Weight: 300.00
- Fits Machine(s): 320BL, 320B, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320E, 320L, 321B, 321D CR, 322BL, 322B, 322C L, 322L, 323D LN, 323DL, 315C, 320D RR, 320D2GC, 320E LRR, 321C, 321D LCR, 323D
- Category(s): Final Drives

Filter Element As-air
- Part #: 4199172
- Weight: 25.80
- Fits Machine(s): 320B, 320E L, 321C, 320E RR, 321B, 320E, 320E LRR, 320D2, 320D RR, 320D2 L, 320D LRR, 320D2 GC, 320D L, 320D FM RR, 320D, 320D LN, 320D GC, 320D FM, 320C L, 320C FM, 320C, 320B L, 320B U

Final Drive (Planetary/Travel) without Motor
- Fits Machine(s): 321B
- Category(s): Final Drives
*Sample Image Shown

Final Drive Asy
- Part #: 114-1484
- Weight: 587.88
- Fits Machine(s): 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320E, 320L, 321D CR, 321D LCR, 322L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 320EL, 321B, 321C, 322BL, 322B, 323D
- Category(s): Final Drives
*Sample Image Shown

Final Drive Asy
- Part #: 227-6035
- Weight: 626.00
- Fits Machine(s): 318C, 318EL, 320C L, 320D L, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320E, 320L, 321D CR, 321D LCR, 322L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 321B, 321C, 322BL, 322B, 323D
- Category(s): Final Drives
*Sample Image Shown

Final Drive Asy
- Part #: 227-6949
- Weight: 587.88
- Fits Machine(s): 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320E, 320L, 321D CR, 321D LCR, 322L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 320EL, 321B, 321C, 322BL, 322B, 323D
- Category(s): Final Drives
*Sample Image Shown

Final Drive Asy
- Part #: 296-6299
- Weight: 587.88
- Fits Machine(s): 318C, 318EL, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320E, 320L, 321D CR, 321D LCR, 322L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 321B, 321C, 322BL, 322B, 323D
- Category(s): Final Drives
*Sample Image Shown

Final Drive Asy
- Part #: 353-0615
- Weight: 587.88
- Fits Machine(s): 318C, 318EL, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320E, 320L, 321D CR, 321D LCR, 322L, 323D LN, 323DL, 320BL, 320B, 320CL, 320C, 320D RR, 320D2GC, 320E LRR, 321B, 321C, 322BL, 322B, 323D
- Category(s): Final Drives

Final Drive Gearbox without Propel Motor
- Part #: AMS1
- Weight: 605.00
- Fits Machine(s): 320BL, 320B, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D RR, 320D2GC, 320D2L, 320D2, 320E LN, 320E LRR, 320E RR, 320EL, 320E, 320L, 321B, 321C, 321D CR, 321D LCR, 322BL, 322B, 322L, 323D LN, 323DL, 323D
- Category(s): Final Drives

Gear Pump-hydraulic
- Part #: 1336911
- Weight: 5.00
- Fits Machine(s): 320B, 539, 325B, 322B L, M325B, 325B L, 322B LN, 322B, 321B, 320B U, 320B FM LL, 320B L
- Category(s): Hydraulic Pumps

Hydraulic Axial Piston Motor
- Part #: 187-4127
- Weight: 141.10
- Fits Machine(s): 322CFMLGP, 320BL, 320B, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320E, 320L, 321B, 321D CR, 322BL, 322B, 322L, 323D LN, 323DL, 324D FM, 315C, 320D RR, 320D2GC, 320E LRR, 321C, 321D LCR, 323D
- Category(s): Final Drives

Hydraulic Breaker with Autogreaser
- Part #: AMS-472307
- Weight: 4507.00
- Fits Machine(s): 215, 219, 224, 225, 318C, 320BL, 320B, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D RR, 320D2GC, 320D2L, 320D2, 320E LN, 320E LRR, 320E RR, 320EL, 320E, 320L, 321B, 321C, 321D CR, 321D LCR, 321, 322BL, 322B, 322L, 322, 517, 527, 545, E180, E220, E240, EL180, EL220, EL240
- Category(s): Attachments

Hydraulic Breaker with Autogreaser
- Part #: AMS-827737
- Weight: 4507.00
- Fits Machine(s): 215, 219, 224, 225, 318C, 320BL, 320B, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D RR, 320D2GC, 320D2L, 320D2, 320E LN, 320E LRR, 320E RR, 320EL, 320E, 320L, 321B, 321C, 321D CR, 321D LCR, 321, 322BL, 322B, 322L, 322, 517, 527, 545, E180, E220, E240, EL180, EL220, EL240
- Category(s): Attachments

Magnetic Switch Assembly
- Part #: 9X8124
- Weight: 0.40
- Fits Machine(s): 311, 320B, 320B L, 325 L, 325, 322 FM L, 322, 321B, 320N, 320C FM, 320C, 3208, 320B FM LL, 315C, 315B, 314C, 320 L, 318B, 319C, 318C, 315B FM L, 315, 313B, 312C L, 312C, 312B, 3126B, 311B

Pipe Use Clamp 947583
- Part #: 5I8040
- Weight: 2.50
- Fits Machine(s): 318C, 323D L, 321C, 321B, 320D RR, 321D LCR, 320D LN, 320D FM RR, 320D, 320D LRR, 320D L, 320D FM, 320C L, 320C FM, 320C, 320B, 319C

Pump, Water
- Part #: 125-2989
- Weight: 8.34
- Fits Machine(s): 311, 321B, 320N, 320B, 312B, 311B

Radiator Hose
- Part #: 7Y1941
- Weight: 0.95
- Fits Machine(s): 311, 321B, 320N, 320B U, 320B FM LL, 320B, 320 L
- Category(s): Radiators

Swing Bearing / Turntable / Slewing Ring
- Fits Machine(s): 321B
- Category(s): Swing Machinery

Switch Assy
- Part #: 165-4026
- Weight: 2.20
- Fits Machine(s): 311B, 321B, 320C, 320C FM, 325C, 325B L, 325B, 322C FM, 322C, 322B LN, 322B, 322, 318C, 317, 315B L, 315B, 320B FM LL, 320B, 318B, 315C, 315B FM L, 315, 312C L, 312C, 312B L, 312B, 312

Track Adjuster
- Part #: 1453029
- Weight: 69.00
- Fits Machine(s): 315C, 321B, 320C, 319C, 318C
- Category(s): Undercarriages

Travel Motor
- Part #: 2042674
- Fits Machine(s): 320BL, 320B, 320CL, 320C, 320D GC, 320D LN, 320D LRR, 320D2L, 320D2, 320E LN, 320E RR, 320EL, 320E, 320L, 321B, 321D CR, 322BL, 322B, 322L, 323D LN, 323DL, 325CL, 315C, 320D RR, 320D2GC, 320E LRR, 321C, 321D LCR, 323D
- Category(s): Final Drives

Water Hose
- Part #: 5I7699
- Weight: 0.33
- Fits Machine(s): 318C, 323D, 321C, 323D L, 320N, 320D, 320C FM, 321B, 320D LRR, 320C L, 320C, 320B L, 320B, 320 L, 319C
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