Cummins 6BT 6.7 QSB, CM850
24 VALVE
REAR GEAR TRAIN
Bore: 4.21 in / 107 mm
Stroke: 4.88 in / 124 mm
- 426
- 427
- 656
- 1584
- 1610
- 1629
- 2605
- 8466
- 8510
- 8610
- 8611
- 8615
- 8733
- 40426
- 40427
- 40656
- 41452
- 41584
- 41586
- 41610
- 41629
- 42605
- 42827
- 43068
- 43293
- 43460
- 43858
- 43859
- 43861
- 43862
- SD2500CS - Asphalt Paver
- CA260PD - Vibratory Compactor
- CA702PD - Vibratory Compactor
- CA612PD - Vibratory Compactor
- CA602PD - Vibratory Compactor
- CA512PD - Vibratory Compactor
- CA362PD - Vibratory Compactor
- CT3000 - Vibratory Compactor
- CA260D - Vibratory Compactor
- HL757-9S
- HL749-9
- GR300XL - Rough Terrain Crane
- 10010MX - Crawler Crane
- GR350XL-2 - Rough Terrain Crane
- GR350XL-1 - Rough Terrain Crane
- 427
- 437
- 437 ZX
- ASC200HD
- ASC200D
- ASC250D
- ASC250HD
- PF6110
- PF6160
- PF6170
- 5100-2
- 5103-2
- 5200-2
- 5203-2
- DF145CS
- DF145C
- 220C - Harvester
- 230C - Harvester
- 234 - Harvester
- T234 - Harvester
- 250B
- T250B
- H250B
- 604C
- 610C
- 620C
- E625C
- 718E - Feller Buncher
- 720E - Feller Buncher
- 724E - Feller Buncher
- 726E - Feller Buncher
- WA250-6 - Wheel Loader
- WA250PZ-6 - Wheel Loader
- WA320-6 - Wheel Loader
- WA320-6N - Wheel Loader
- WA320PZ-6 - Wheel Loader
Cummins CPL's
Dynapac
Hyundai
TADANO
JCB
Ammann - Vibratory Compactors
Ingersoll Rand
Vogele Vision
Svedala Demag
Skidder
Komatsu
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1) Engine O/H KitCOK5160/6 Std Click to view kit contentCLOSEItem #:Quantity:Description:C38020701BRG, MAIN SET STD 6BC390117012BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC48908321SEAL, CRANKSHAFT FRONT 4.5 & 6.7C48911786BUSHING, CON ROD B SERIESC49551606KIT, PISTON, QSB 4.5/6.7, STDC49552291GASKET, TOP SET QSB 6.7C49552301GASKET, BOTTOM SET QSB 6.7C49553721SEAL CRANKSHAFT REAR 4.5 & 6.7CLOSEItem #:Quantity:Description:C38020701BRG, MAIN SET STD 6BC39011706BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC48908321SEAL, CRANKSHAFT FRONT 4.5 & 6.7C48911786BUSHING, CON ROD B SERIESC48936936BRG, CON ROD, STD, B SERIES (LOWER)C49552291GASKET, TOP SET QSB 6.7C49552301GASKET, BOTTOM SET QSB 6.7C49553721SEAL CRANKSHAFT REAR 4.5 & 6.7C49554816KIT, PISTON, QSB 4.5/6.7, 0.50MM2) O/H Kit Fractured RodCOK5160F/6 Std (3)
On Fracture Split Con Rods use: 6 of C3901170 (or O/S) and 6 of C4893693 (or O/S).
Click to view kit contentCLOSEItem #:Quantity:Description:C38020701BRG, MAIN SET STD 6BC39011706BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC48908321SEAL, CRANKSHAFT FRONT 4.5 & 6.7C48911786BUSHING, CON ROD B SERIESC48936936BRG, CON ROD, STD, B SERIES (LOWER)C49551606KIT, PISTON, QSB 4.5/6.7, STDC49552291GASKET, TOP SET QSB 6.7C49552301GASKET, BOTTOM SET QSB 6.7C49553721SEAL CRANKSHAFT REAR 4.5 & 6.7CLOSEItem #:Quantity:Description:C38020701BRG, MAIN SET STD 6BC39011706BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC48908321SEAL, CRANKSHAFT FRONT 4.5 & 6.7C48911786BUSHING, CON ROD B SERIESC48936936BRG, CON ROD, STD, B SERIES (LOWER)C49552291GASKET, TOP SET QSB 6.7C49552301GASKET, BOTTOM SET QSB 6.7C49553721SEAL CRANKSHAFT REAR 4.5 & 6.7C49554816KIT, PISTON, QSB 4.5/6.7, 0.50MM3) Engine I/F KitCIK5160/6 Std Click to view kit contentCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC49553561GASKET, TOP SET QSB 4.5C390117012BRG, CON ROD STD B SERIESC49343441GASKET, OIL PAN QSB 6.7C49551606KIT, PISTON, QSB 4.5/6.7, STDCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC49553561GASKET, TOP SET QSB 4.5C390117012BRG, CON ROD STD B SERIESC49343441GASKET, OIL PAN QSB 6.7C49554816KIT, PISTON, QSB 4.5/6.7, 0.50 mm -
1) Piston & Ring KitC4955160 Std C4955481 0.50 mmUse 6
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Main Bearing SetC3802070 Std C3802071 0.25 mm C3802072 0.50 mm C3802073 0.75 mmUse 1
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Con Rod BearingC3901170 Std C3901171 0.25 mm C3901172 0.50 mm C3901173 0.75 mmRod bearings are priced and sold per shell
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Fractured Con Rod BearingC4893693 Std (3)
On Fracture Split Con Rods use: 6 of C3901170 (or O/S) and 6 of C4893693 (or O/S).
C4892795 0.25 mm C4892796 0.50 mm C4892797 0.75 mmRod bearings are priced and sold per shell -
1) Front SealC48908322) Rear SealC49553723) Crankshaft, GearC39551514) CrankshaftC4934862 (1)
Check application for proper usage.
5) Ring GearC3903309 (173T) (1)Check application for proper usage.
C3905427 (127T) (1)Check application for proper usage.
C3901774 (159T) (1)Check application for proper usage.
C3902127 (138T) (1)Check application for proper usage.
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1) Top Gasket SetC49552292) Bottom Gsk SetC49552303) Head GasketC49322104) Oil Pan GasketC3959797 (5)
Paper/composite material
C4934344 (6)Rubber material
5) Valve Cover GskC4899226 -
1) Bushing, PistonC4891178 x62) Bushing, CamC3940059 x13) Bolt, Con RodC4891179 x124) Con RodC49439795) Bolt, Ex ManifoldC3944593 (2)
Flanged Head Cap Screw.
C3944655 (4)Studded Flange Cap Screw.
6) Spacer, Ex ManifoldC3945252 -
1) CamshaftC39795062) TappetC39477593) Rocker ArmsC3942734 x6 C3942735 x64) Camshaft GearC3955152
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1) Oil Cooler 7 PlatesC3921558Oil Cooler 8 PlatesC39758182) Oil Cooler GasketC39429143) Oil Cooler Gasket Filter HeadC39429154) Nozzle, Piston CoolingC4937308
1) 1 C4934860 Piston Std, 1 C4955251 Ring Set Std, 1 C4931041 Piston Pin, 2 C3920691 Ret.
2) 1 C4934816 Piston 0.50 mm, 1 C4955480 Ring Set 0.50 mm, 1 C4931041 Piston Pin, 2 C3920691 Ret.

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1) Intake, Valve KitConsists of:2) Insert, ValveUse 12
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1) Exhaust, Valve KitConsists of:2) Insert, ValveUse 12
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1) Spring, Valve2) Seal, Valve3) Retainer, Valve
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1) Water PumpC38009842) Water Pump SealC39066983) ThermostatC5292708
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1) Oil PumpC39715442) Fuel InjectorC3976372 (1)
Check application for proper usage.
3) Repair SleeveC4919951 -
1) Cylinder HeadC5282703 (1)
Check application for proper usage.
2) Head BoltC3927063 x263) Expansion Plug Kit4) Belt TensionerC3914086 (1)Check application for proper usage.