Cummins 4BT 3.9 QSB Piston (m): 7795
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AVAILABLE EQUIPMENT MODELS
Engine Series:
QSB
Engine Model:
4BT 3.9 QSB
Engine Data:
8 VALVE
TURBOCHARGED
Engine Info:
4 Cyl
Engine Dimensions:
Bore: 4.02 in / 102.108 mm
Stroke: 4.72 in / 119.888 mm
Piston (m):
7795
- WA150-5 - Wheel Loader
- WA150PZ-5 - Wheel Loader
- 2943
- 8058
- 8148
- 8149
- 8337
- 8492
- SAA4D102E-2B - ESN 26277757-UP
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Equipment Models
Komatsu
Cummins CPL's
Komatsu
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1) Engine O/H KitCOK7797/4 Std Click to view kit contentCOK7799/4 0.50 mm 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 SERIESC39577974KIT, 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 SERIESC39577994KIT, PISTON, QSB 3.9, 0.50 MMC48911784BUSHING, CON ROD B SERIES2) O/H Kit Fractured RodCOK7797F/4 Std (1) Click to view kit contentCOK7799F/4 0.50 Click to view kit contentCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC38023751GASKET, BOTTOM SET 4BC39011704BRG, CON ROD STD B SERIESC39400591BUSHING, CAMSHAFT B SERIESC395577974KIT, 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 SERIESC39577994KIT, PISTON, QSB 3.9, 0.50 MMC40896481GASKET, TOP SET 4B QSBC48911784BUSHING, CON ROD B SERIESC48936934BRG, CON ROD, STD, B SERIES (LOWER)3) Engine I/F KitCIK7797/4 Std Click to view kit contentCIK7799/4 0.50 mm Click to view kit contentCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39316021GASKET, OIL PAN 4BC39577974KIT, PISTON, QSB 3.9, STDCLOSEItem #:Quantity:Description:C38020101BRG, MAIN SET STD 4BC40896481GASKET, TOP SET 4BC39011708BRG, CON ROD STD B SERIESC39316021GASKET, OIL PAN 4BC39577994KIT, PISTON, QSB 3.9, 0.50 MM4) Engine I/F Kit Fractured RodCIK7797F/4 Std Click to view kit contentCIK7799F/4 .50mm Click to view kit contentCLOSEItem #:Quantity:Description:C39577974KIT, PISTON, QSB 3.9, STDC39011704BRG, CON ROD STD B SERIESC48936934BRG, CON ROD, STD, B SERIES (LOWER)C38020101BRG, MAIN SET STD 4BC40896481GASKET, TOP SET 4BC39316021GASKET, OIL PAN 4BSPEC SHEET - 4BT 3.9 QSBCLOSEItem #:Quantity:Description:C39577994KIT, PISTON, QSB 3.9, .50mmC39011704BRG, CON ROD STD B SERIESC48936934BRG, CON ROD, STD, B SERIES (LOWER)C38020101BRG, MAIN SET STD 4BC40896481GASKET, TOP SET 4BC39316021GASKET, OIL PAN 4B -
1) Piston & Ring KitC3957797 Std C3957799 0.50 mmUse 4 -
Main Bearing SetC3802010 Std C3802011 0.25 mm C3802012 0.50 mm C3802013 0.75 mmUse 1 -
Con Rod BearingC3901170 Std C3901171 0.25 mm C3901172 0.50 mm C3901173 0.75 mmRod bearings are priced and sold per shell -
Fractured Con Rod BearingC4893693 Std (1) 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) C3905427 (127T) (9) C3901774 (159T) (9) C3902127 (138T) (9) -
1) Top Gasket SetC40896482) Bottom Gsk SetC38023753) Head GasketC3921393 Std C3283336 .010" OS C3283338 .020" OS4) Oil Pan GasketC39316025) Valve Cover GskC39026666) Gear Housing GskC39161317) Rear Cover GskC39284938) Gear Cover GasketC3918673 (9) -
1) Bushing, PistonC4891178 x42) Bushing, CamC3940059 x13) Bolt, Con RodC3900919 x8 (6) C4891179 x8 (7)4) Con RodC3901569 (6) C4943979 (7)5) Bolt, Ex ManifoldC3944593 (10) C3944655 (11)6) Spacer, Ex. ManifoldC3945252 -
1) CamshaftC3925582 (8)2) TappetC39250313) Push RodC39046794) Rocker ArmsC3910811 x4 C3910810 x45) Camshaft GearC3907431 (8)6) Camshaft KeyC3902332 -
1) Oil Cooler 7 PltC39215572) Oil Cooler GasketC39267603) Oil Cooler Gasket Filter HeadC3942915
Piston Kit:
1) 1 C3957795 Piston Std,          1 C3938177 Ring Set Std,            1 C3934047 Piston Pin,  2 C3920691 Ret.
2) 1 C3957798 Piston 0.50 mm, 1 C3938197 Ring Set 0.50 mm, 1 C3934047 Piston Pin,  2 C3920691 Ret.
Valve Section
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Guide, Valve
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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)C3957912 x8 (5)3) Retainer, ValveC3900299 x8 (4)
(1): On Fracture Split Con Rods use: C3901170 x4 (or O/S) and C4893693 x4 (or O/S).
(2): Can be Used on Both Intake and Exhaust.
(3): Diaphragm Style.
(4): For use on engines from April 2003, (Top Hat Style Valve Stem Seal).
(5): For use on engines from April 2003, (Top Hat Style Valve Stem Seal).
(6): Machine split connecting rod.
(7): Fracture split connecting rod.
(8): Use ESN or application model to confirm correct Camshaft & Gear.
(9): Check for proper application.
(10): Flanged Head Cap Screw.
(11): Studded Flange Cap Screw.