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Engines & Blocks

fits Cummins
Cummins ISB 5.9L 12-Valve, 6B, 6BT, 6BTA 5.9L New Long Block

Allis Chalmers 800C (6BT 5.9L) — Cummins ISB 5.9L 12-Valve, 6B, 6BT, 6BTA 5.9L New Long Block

$7,92500
99+ 999 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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fits Cummins
Cummins 6B, 6BT, 6BTA 5.9L, Case 6-590, 6T-590, 6TA-590 New Long Block

Allis Chalmers 800C (6BT 5.9L) — Cummins 6B, 6BT, 6BTA 5.9L, Case 6-590, 6T-590, 6TA-590 New Long Block

$5,99500
99+ 999 Available and in stock.
New Aftermarket
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fits Cummins
Cummins 6B, 6BT, 6BTA 5.9L, Case 6-590, 6T-590, 6TA-590 Reman Long Block

Allis Chalmers 800C (6BT 5.9L) — Cummins 6B, 6BT, 6BTA 5.9L, Case 6-590, 6T-590, 6TA-590 Reman Long Block

$5,25000
99+ 999 Available and in stock.
Remanufactured
RF ENGINE RF Engine in-house reman
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fits Cummins
Cummins 6B, 6BT, 5.9L, Case 6-590, 6T-590 Reman Long Block

Allis Chalmers 800C (6BT 5.9L) — Cummins 6B, 6BT, 5.9L, Case 6-590, 6T-590 Reman Long Block

$5,25000
99+ 999 Available and in stock.
Remanufactured
RF ENGINE RF Engine in-house reman
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Free Shipping
Cummins 6BT 5.9L Inframe-Engine Rebuild Kit

Allis Chalmers 800C (6BT 5.9L) — Cummins 6BT 5.9L Inframe-Engine Rebuild Kit

$78894
99+ 999 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Engine Kits

fits Case
Cummins 6B, 6BT, 6BTA 5.9L, Case 6-590, 6T-590, 6TA-590 New Long Block Kit

Allis Chalmers 800C (6BT 5.9L) — Cummins 6B, 6BT, 6BTA 5.9L, Case 6-590, 6T-590, 6TA-590 New Long Block Kit

$6,73100
99+ 999 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Free Shipping
Inframe Engine Kit

Allis Chalmers 800C (6BT 5.9L) — Inframe Engine Kit

$68936
99+ 999 Available and in stock.
New Aftermarket
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Crankshafts & Rods

New Crankshaft for Cummins, Case 3907804

Allis Chalmers 800C (6BT 5.9L) — New Crankshaft for Cummins, Case 3907804

From $77105
23 23 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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Connecting Rod for Cummins 3901566

Allis Chalmers 800C (6BT 5.9L) — Connecting Rod for Cummins 3901566

From $2500
99+ 122 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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Connecting Rod Cap Bolt for Cummins, Case 3900919

Allis Chalmers 800C (6BT 5.9L) — Connecting Rod Cap Bolt for Cummins, Case 3900919

$800
0 Sorry, currently out of stock.
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Cylinder Heads

New Loaded Cylinder Head for Cummins, Case 3934747

Allis Chalmers 800C (6BT 5.9L) — New Loaded Cylinder Head for Cummins, Case 3934747

$1,12400
34 34 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cummins 6B 5.9L, Case 6-590 Used Cylinder Head with Valves | Replaces 3934747, J934773

Allis Chalmers 800C (6BT 5.9L) — Cummins 6B 5.9L, Case 6-590 Used Cylinder Head with Valves | Replaces 3934747, J934773

$65000
1 Only 1 left in stock.
New Aftermarket
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Cylinder Head Bolt Set for Cummins, Case 3920779

Allis Chalmers 800C (6BT 5.9L) — Cylinder Head Bolt Set for Cummins, Case 3920779

$13703
99+ 999 Available and in stock.
New Aftermarket
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fits Cummins
New Bare Cylinder Head for Cummins 3902343

Allis Chalmers 800C (6BT 5.9L) — New Bare Cylinder Head for Cummins 3902343

$175
99+ 103 Available and in stock.
New Aftermarket
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Camshafts & Balancers

Camshaft for Cummins, Case 3929042

Allis Chalmers 800C (6BT 5.9L) — Camshaft for Cummins, Case 3929042

$26463
19 19 Available and in stock.
New Aftermarket
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Camshaft & Lifter for Cummins, Case 3929042

Allis Chalmers 800C (6BT 5.9L) — Camshaft & Lifter for Cummins, Case 3929042

$24662
99+ 999 Available and in stock.
New Aftermarket
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Camshaft Gear for Cummins 3907431

Allis Chalmers 800C (6BT 5.9L) — Camshaft Gear for Cummins 3907431

$12117
0 Sorry, currently out of stock.
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Camshaft Thrust Plate for Cummins, Case 3927155

Allis Chalmers 800C (6BT 5.9L) — Camshaft Thrust Plate for Cummins, Case 3927155

$1220
4 Only 4 left in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cummins 4B, 6B, Case 4-390, 6-590 New Pushrod | Replaces 3904679, J923262

Allis Chalmers 800C (6BT 5.9L) — Cummins 4B, 6B, Case 4-390, 6-590 New Pushrod | Replaces 3904679, J923262

$924
99+ 251 Available and in stock.
New Aftermarket
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Valve Lifter for Cummins 3931623

Allis Chalmers 800C (6BT 5.9L) — Valve Lifter for Cummins 3931623

$726
17 17 Available and in stock.
New Aftermarket
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Camshaft Plug Kit for Cummins 3926047

Allis Chalmers 800C (6BT 5.9L) — Camshaft Plug Kit for Cummins 3926047

$577
99+ 999 Available and in stock.
New Aftermarket
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fits Cummins
Camshaft for Cummins 3902332

Allis Chalmers 800C (6BT 5.9L) — Camshaft for Cummins 3902332

$302
67 67 Available and in stock.
New Aftermarket
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Cylinder Components

Piston Ring Set for Allis Chalmers 131229

Allis Chalmers 800C (6BT 5.9L) — Piston Ring Set for Allis Chalmers 131229

$34848
0 Sorry, currently out of stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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fits Cummins
Piston & Ring Kit for Cummins 3802160

Allis Chalmers 800C (6BT 5.9L) — Piston & Ring Kit for Cummins 3802160

From $5733
99+ 268 Available and in stock.
A collection of different conditions, brands, or sizes
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Cylinder Repair Sleeve for Cummins, Komatsu 3904166

Allis Chalmers 800C (6BT 5.9L) — Cylinder Repair Sleeve for Cummins, Komatsu 3904166

$2208
99+ 325 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Piston Ring Set for Cummins 3802421

Allis Chalmers 800C (6BT 5.9L) — Piston Ring Set for Cummins 3802421

$1958
99+ 837 Available and in stock.
New Aftermarket
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Piston Rings for Cummins 3802422

Allis Chalmers 800C (6BT 5.9L) — Piston Rings for Cummins 3802422

$1945
99+ 652 Available and in stock.
New Aftermarket
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Piston Rings for Cummins 3802234

Allis Chalmers 800C (6BT 5.9L) — Piston Rings for Cummins 3802234

$1851
99+ 301 Available and in stock.
New Aftermarket
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Piston Pin for Cummins 3934048

Allis Chalmers 800C (6BT 5.9L) — Piston Pin for Cummins 3934048

$1292
8 8 Available and in stock.
New Aftermarket
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Bearings & Bushings

Cummins 4B, 6B, 6C, QSB, ISB, QSC Fan Drive Bearing | Replaces 3910739, J910739

Allis Chalmers 800C (6BT 5.9L) — Cummins 4B, 6B, 6C, QSB, ISB, QSC Fan Drive Bearing | Replaces 3910739, J910739

$8150
8 8 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Main Bearing Set for Cummins, Case, Komatsu 3802070

Allis Chalmers 800C (6BT 5.9L) — Main Bearing Set for Cummins, Case, Komatsu 3802070

From $5757
99+ 349 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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fits Cummins
Connecting Rod Bearing for Cummins 3969562

Allis Chalmers 800C (6BT 5.9L) — Connecting Rod Bearing for Cummins 3969562

From $1335
99+ 658 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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fits Cummins
Connecting Rod Bearing for Cummins 3901170

Allis Chalmers 800C (6BT 5.9L) — Connecting Rod Bearing for Cummins 3901170

From $1175
99+ 4661 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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Piston Pin Bushing for Cummins 4891178

Allis Chalmers 800C (6BT 5.9L) — Piston Pin Bushing for Cummins 4891178

$1087
99+ 1810 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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fits Cummins
Camshaft Bushing for Cummins, Case 3940059

Allis Chalmers 800C (6BT 5.9L) — Camshaft Bushing for Cummins, Case 3940059

From $508
99+ 2403 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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Gaskets & Seals

Conversion Gasket Set for Cummins, Case, Komatsu 3802376

Allis Chalmers 800C (6BT 5.9L) — Conversion Gasket Set for Cummins, Case, Komatsu 3802376

$13447
99+ 154 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cylinder Head Gasket Set for Cummins, Case 3804897

Allis Chalmers 800C (6BT 5.9L) — Cylinder Head Gasket Set for Cummins, Case 3804897

$12378
99+ 163 Available and in stock.
New Aftermarket
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Crankshaft Wear Sleeve for Cummins 3906081

Allis Chalmers 800C (6BT 5.9L) — Crankshaft Wear Sleeve for Cummins 3906081

$4651
37 37 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Rear Crankshaft Seal Kit for Cummins 3926126

Allis Chalmers 800C (6BT 5.9L) — Rear Crankshaft Seal Kit for Cummins 3926126

$4610
99+ 733 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cylinder Head Gasket for Cummins, Case, Komatsu 3283335

Allis Chalmers 800C (6BT 5.9L) — Cylinder Head Gasket for Cummins, Case, Komatsu 3283335

From $4379
83 83 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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fits Cummins
Cummins 6B, ISB, QSB 5.9L Sensor Port Plug Assembly | Replaces 3932296

Allis Chalmers 800C (6BT 5.9L) — Cummins 6B, ISB, QSB 5.9L Sensor Port Plug Assembly | Replaces 3932296

$3957
3 Only 3 left in stock.
New Aftermarket
PAI PAI Industries brand replacement parts
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Rear Crankshaft Seal for Cummins 3909411

Allis Chalmers 800C (6BT 5.9L) — Rear Crankshaft Seal for Cummins 3909411

$3746
17 17 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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fits Cummins
Expansion Plug Kit for Cummins 3900687

Allis Chalmers 800C (6BT 5.9L) — Expansion Plug Kit for Cummins 3900687

From $3413
20 20 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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Front Crankshaft Seal & Sleeve Kit for Cummins 3802820

Allis Chalmers 800C (6BT 5.9L) — Front Crankshaft Seal & Sleeve Kit for Cummins 3802820

$3200
99+ 108 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Rear Crankshaft Seal for Cummins 4089342

Allis Chalmers 800C (6BT 5.9L) — Rear Crankshaft Seal for Cummins 4089342

$3195
14 14 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Crankshaft Wear Sleeve for Cummins 3906080

Allis Chalmers 800C (6BT 5.9L) — Crankshaft Wear Sleeve for Cummins 3906080

$3110
27 27 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Oil Pan Gasket Set for Cummins 3931346

Allis Chalmers 800C (6BT 5.9L) — Oil Pan Gasket Set for Cummins 3931346

$2406
18 18 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Front Crankshaft Seal for Cummins 3900709

Allis Chalmers 800C (6BT 5.9L) — Front Crankshaft Seal for Cummins 3900709

$2098
99+ 194 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cummins 6B, ISB Pushrod Cover Gasket | Replaces 3284623, J904776

Allis Chalmers 800C (6BT 5.9L) — Cummins 6B, ISB Pushrod Cover Gasket | Replaces 3284623, J904776

$1953
32 32 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Oil Cooler Gasket for Cummins 3926760

Allis Chalmers 800C (6BT 5.9L) — Oil Cooler Gasket for Cummins 3926760

$993
3 Only 3 left in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cummins 4B, 6B Oil Filter Head Seat Gasket | Replaces 3929792, J912532

Allis Chalmers 800C (6BT 5.9L) — Cummins 4B, 6B Oil Filter Head Seat Gasket | Replaces 3929792, J912532

$844
13 13 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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fits Cummins
Expansion Plug (2.288" / 58mm) for Cummins 3922072

Allis Chalmers 800C (6BT 5.9L) — Expansion Plug (2.288" / 58mm) for Cummins 3922072

$429
99+ 422 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Valve Cover Gasket for Cummins 3930906

Allis Chalmers 800C (6BT 5.9L) — Valve Cover Gasket for Cummins 3930906

$423
99+ 331 Available and in stock.
New Aftermarket
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Expansion Plug (Rear) for Cummins 3900687

Allis Chalmers 800C (6BT 5.9L) — Expansion Plug (Rear) for Cummins 3900687

$275
99+ 133 Available and in stock.
New Aftermarket
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Oil Pan for Cummins 3902425

Allis Chalmers 800C (6BT 5.9L) — Oil Pan for Cummins 3902425

$116
36 36 Available and in stock.
New Aftermarket
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Valve Hardware

Valve Train Kit for Cummins, Case, Komatsu 3802356

Allis Chalmers 800C (6BT 5.9L) — Valve Train Kit for Cummins, Case, Komatsu 3802356

$20446
99+ 999 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cummins 4B, 6B, Case 4-390, 6-590 New Valve Stem Cap | Replaces 3910412, J280911

Allis Chalmers 800C (6BT 5.9L) — Cummins 4B, 6B, Case 4-390, 6-590 New Valve Stem Cap | Replaces 3910412, J280911

$7363
0 Sorry, currently out of stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Rocker Arm Stand & Shaft for Cummins, Case 3910814

Allis Chalmers 800C (6BT 5.9L) — Rocker Arm Stand & Shaft for Cummins, Case 3910814

$5571
0 Sorry, currently out of stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Exhaust Rocker Arm for Cummins, Case 3910810

Allis Chalmers 800C (6BT 5.9L) — Exhaust Rocker Arm for Cummins, Case 3910810

$2182
70 70 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Intake Rocker Arm for Cummins, Case 3910811

Allis Chalmers 800C (6BT 5.9L) — Intake Rocker Arm for Cummins, Case 3910811

$2094
41 41 Available and in stock.
New Aftermarket
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Exhaust Valve for Cummins, Case 3802356

Allis Chalmers 800C (6BT 5.9L) — Exhaust Valve for Cummins, Case 3802356

$1152
99+ 195 Available and in stock.
New Aftermarket
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Intake Valve for Cummins, Case 3802355

Allis Chalmers 800C (6BT 5.9L) — Intake Valve for Cummins, Case 3802355

$783
99+ 168 Available and in stock.
New Aftermarket
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fits Cummins
Valve Seat for Cummins 3925177

Allis Chalmers 800C (6BT 5.9L) — Valve Seat for Cummins 3925177

$609
14 14 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Valve Spring for Cummins, Case 3900276

Allis Chalmers 800C (6BT 5.9L) — Valve Spring for Cummins, Case 3900276

$426
99+ 448 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Valve Guide Repair Insert for Cummins 3906206

Allis Chalmers 800C (6BT 5.9L) — Valve Guide Repair Insert for Cummins 3906206

$418
55 55 Available and in stock.
New Aftermarket
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fits Cummins
Valve Seat for Cummins 3904105

Allis Chalmers 800C (6BT 5.9L) — Valve Seat for Cummins 3904105

$357
69 69 Available and in stock.
New Aftermarket
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fits Cummins
Valve Seat for Cummins RP401139

Allis Chalmers 800C (6BT 5.9L) — Valve Seat for Cummins RP401139

$341
16 16 Available and in stock.
New Aftermarket
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fits Cummins
Valve Seat for Cummins RP401138

Allis Chalmers 800C (6BT 5.9L) — Valve Seat for Cummins RP401138

$325
19 19 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Exhaust Valve Guide for Cummins 3904409

Allis Chalmers 800C (6BT 5.9L) — Exhaust Valve Guide for Cummins 3904409

$279
52 52 Available and in stock.
New Aftermarket
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Intake Valve Guide for Cummins 3904408

Allis Chalmers 800C (6BT 5.9L) — Intake Valve Guide for Cummins 3904408

$276
30 30 Available and in stock.
New Aftermarket
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Valve Spring Retainer for Cummins 3900299

Allis Chalmers 800C (6BT 5.9L) — Valve Spring Retainer for Cummins 3900299

$274
99+ 129 Available and in stock.
New Aftermarket
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Valve Seal for Cummins, Case 3901097

Allis Chalmers 800C (6BT 5.9L) — Valve Seal for Cummins, Case 3901097

$119
55 55 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Valve Spring Lock for Cummins 3900250

Allis Chalmers 800C (6BT 5.9L) — Valve Spring Lock for Cummins 3900250

$081
99+ 845 Available and in stock.
New Aftermarket
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fits Cummins
Valve Spring Locks for Cummins 3940123

Allis Chalmers 800C (6BT 5.9L) — Valve Spring Locks for Cummins 3940123

$077
50 50 Available and in stock.
New Aftermarket
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Timing & Gear Train

Cummins 4B 3.9L, 6B 5.9L, QSB 5.9L, 6C 8.3L New Belt Tensioner | Replaces 3934817, J937553

Allis Chalmers 800C (6BT 5.9L) — Cummins 4B 3.9L, 6B 5.9L, QSB 5.9L, 6C 8.3L New Belt Tensioner | Replaces 3934817, J937553

$9177
59 59 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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fits Cummins
Injection Pump Drive Gear for Cummins 3936021, J920594

Allis Chalmers 800C (6BT 5.9L) — Injection Pump Drive Gear for Cummins 3936021, J920594

From $7500
6 6 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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Crankshaft Gear for Cummins 3929027

Allis Chalmers 800C (6BT 5.9L) — Crankshaft Gear for Cummins 3929027

$6388
99+ 123 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Fuel System

Fuel Transfer Pump for Cummins, Case 4983584

Allis Chalmers 800C (6BT 5.9L) — Fuel Transfer Pump for Cummins, Case 4983584

$5375
16 16 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Lubrication System

Oil Pump for Cummins, Case 3937404

Allis Chalmers 800C (6BT 5.9L) — Oil Pump for Cummins, Case 3937404

$9562
58 58 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cummins 4B 3.9L, 6B 5.9L New Oil Filter Head Seat | Replaces 3913967, 3918288

Allis Chalmers 800C (6BT 5.9L) — Cummins 4B 3.9L, 6B 5.9L New Oil Filter Head Seat | Replaces 3913967, 3918288

$8995
0 Sorry, currently out of stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Piston Cooling Nozzle for Cummins 3901020

Allis Chalmers 800C (6BT 5.9L) — Piston Cooling Nozzle for Cummins 3901020

From $052
53 53 Available and in stock.
A collection of different conditions, brands, or sizes
COLLECTION Multiple versions of the same part
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Air System

Cummins 4B 3.9L, 6B 5.9L, ISB, QSB New Exhaust Manifold Bolt | Replaces 3901448, 3944593

Allis Chalmers 800C (6BT 5.9L) — Cummins 4B 3.9L, 6B 5.9L, ISB, QSB New Exhaust Manifold Bolt | Replaces 3901448, 3944593

$401
99+ 1031 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Cooling System

Oil Cooler for Cummins, Case 3957544

Allis Chalmers 800C (6BT 5.9L) — Oil Cooler for Cummins, Case 3957544

$10837
0 Sorry, currently out of stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Water Pump for Cummins, Case 3286277

Allis Chalmers 800C (6BT 5.9L) — Water Pump for Cummins, Case 3286277

$7825
53 53 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Thermostat Kit for Cummins, Case 3802273

Allis Chalmers 800C (6BT 5.9L) — Thermostat Kit for Cummins, Case 3802273

$2717
99+ 146 Available and in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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Drivetrain & Hydraulics

fits Cummins
Flywheel Ring Gear for Cummins 3973747

Allis Chalmers 800C (6BT 5.9L) — Flywheel Ring Gear for Cummins 3973747

$29229
3 Only 3 left in stock.
New Aftermarket
RELIANCE Reliance brand replacement parts
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  • Morrice, MI 48857
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