Cummins 4BT 3.9 QSB Piston (m): 7416
8 VALVE
TURBOCHARGED
Bore: 4.02 in / 102.108 mm
Stroke: 4.72 in / 119.888 mm
- 8039
- 8239
- 8240
- 8334
- 8335
- 8507
- 43850
- 44247
- 8238
Cummins CPL's
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1) Engine O/H KitCOK9461/4 Std Click to view kit contentCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC38023751GASKET, BOTTOM SET 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC40894614KIT, PISTON, QSB 3.9, STDC48911784BUSHING, CON ROD B SERIESCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC38023751GASKET, BOTTOM SET 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC40896184KIT, PISTON, QSB 3.9, 0.50 MMC48911784BUSHING, CON ROD B SERIESCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC38023751GASKET, BOTTOM SET 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC40896194KIT, PISTON, QSB 3.9, 1.00 MMC48911784BUSHING, CON ROD B SERIES2) O/H Kit Fractured RodCOK9461F/4 Std (1)
On Fracture Split Con Rods use: C3901170 x4 (or O/S) and C4893693 x4 (or O/S).
Click to view kit contentCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC38023751GASKET, BOTTOM SET 4BC39011704BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC40894614KIT, PISTON, QSB 3.9, STDC40896481GASKET, TOP SET 4B QSBC48911784BUSHING, CON ROD B SERIESC48936934BRG, CON ROD, STD, B SERIES (LOWER)CLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC38023751GASKET, BOTTOM SET 4BC39011704BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC40896184KIT, PISTON, QSB 3.9, 0.50 MMC40896481GASKET, TOP SET 4B QSBC48911784BUSHING, CON ROD B SERIESC48936934BRG, CON ROD, STD, B SERIES (LOWER)CLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC38023751GASKET, BOTTOM SET 4BC39011704BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC40896194KIT, PISTON, QSB 3.9, 1.00 MMC40896481GASKET, TOP SET 4B QSBC48911784BUSHING, CON ROD B SERIESC48936934BRG, CON ROD, STD, B SERIES (LOWER)3) Engine I/F KitCIK9461/4 Std Click to view kit contentCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39316021GASKET, OIL PAN 4BC40894614KIT, PISTON, QSB 3.9, STDCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39316021GASKET, OIL PAN 4BC40896184KIT, PISTON, QSB 3.9, 0.50 MMCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39316021GASKET, OIL PAN 4BC40896194KIT, PISTON, QSB 3.9, 1.00 MM -
1) Piston & Ring KitC4089461 Std C4089618 0.50 mm C4089619 1.00 mmUse 4
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Main Bearing SetC3802010 Std C3802011 0.25 mm C3802012 0.50 mm C3802013 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 (1)
On Fracture Split Con Rods use: C3901170 x4 (or O/S) and C4893693 x4 (or O/S).
C4892795 0.25 mm C4892796 0.50 mm C4892797 0.75 mmRod bearings are priced and sold per shell -
1) Front SealC39043532) Rear SealC33539783) CrankshaftC39078034) Front Seal SleeveC39060805) Rear Seal SleeveC39060816) Rectangular SealC39124737) Crankshaft, GearC39012588) Ring GearC3903309 (173T) (9)
Check for proper application.
C3905427 (127T) (9)Check for proper application.
C3901774 (159T) (9)Check for proper application.
C3902127 (138T) (9)Check for proper application.
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1) Top Gasket SetC40896482) Bottom Gsk SetC38023753) Head GasketC39213934) Oil Pan GasketC39316025) Valve Cover GskC39026666) Gear Housing GskC39161317) Rear Cover GskC39284938) Gear Cover GasketC3918673 (9)
Check for proper application.
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1) Bushing, PistonC4891178 x42) Bushing, CamC3940059 x13) Bolt, Con RodC3900919 x8 (6)
Machine split connecting rod.
C4891179 x8 (7)Fracture split connecting rod.
4) Con RodC3901569 (6)Machine split connecting rod.
C4943979 (7)Fracture split connecting rod.
5) Bolt, Ex ManifoldC3944593 (10)Flanged Head Cap Screw.
C3944655 (11)Studded Flange Cap Screw.
6) Spacer, Ex. ManifoldC3945252 -
1) CamshaftC3925582 (8)
Use ESN or application model to confirm correct Camshaft & Gear.
2) TappetC39250313) Push RodC39046794) Rocker ArmsC3910811 x4 C3910810 x45) Camshaft GearC3907431 (8)Use ESN or application model to confirm correct Camshaft & Gear.
6) Camshaft KeyC3902332 -
1) Oil Cooler 7 PltC39215572) Oil Cooler GasketC39267603) Oil Cooler Gasket Filter HeadC3942915
1) 1 C3957416 Piston Std, 1 C4089460 Ring Set Std, 1 C3934047 Piston Pin, 2 C3920691 Ret.
2) 1 C3957417 Piston 0.50 mm, 1 C4089614 Ring Set 0.50 mm, 1 C3934047 Piston Pin, 2 C3920691 Ret.
3) 1 C3957418 Piston 1.00 mm, 1 C4089615 Ring Set 1.00 mm, 1 C3934047 Piston Pin, 2 C3920691 Ret.

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Guide, ValveC3906206 Thin Wall (3)
Diaphragm Style.
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1) Intake, Valve KitConsists of:2) Insert, ValveUse 4
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1) Exhaust, Valve KitConsists of:2) Insert, ValveUse 4
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1) Spring, Valve2) Seal, ValveC3921640 x8 (4)
For use on engines from April 2003, (Top Hat Style Valve Stem Seal).
C3957912 x8 (5)For use on engines from April 2003, (Top Hat Style Valve Stem Seal).
3) Retainer, ValveC3900299 x8 (4)For use on engines from April 2003, (Top Hat Style Valve Stem Seal).