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Cummins 4BT 3.9 QSB Piston (m): 7416

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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): 7416
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    Equipment Models

    Cummins CPL's

    • 8039
    • 8239
    • 8240
    • 8334
    • 8335
    • 8507
    • 43850
    • 44247
    • 8238
  • 1) Engine O/H Kit
    COK9461/4 Std Click to view kit content
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    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C3802375
    1
    GASKET, BOTTOM SET 4B
    C4089648
    1
    GASKET, TOP SET 4B
    C3901170
    8
    BRG, CON ROD STD B SERIES
    C3940059
    1
    BUSHING, CAMSHAFT B SERIES
    C4089461
    4
    KIT, PISTON, QSB 3.9, STD
    C4891178
    4
    BUSHING, CON ROD B SERIES
         COK9618/4 0.50 mm Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C3802375
    1
    GASKET, BOTTOM SET 4B
    C4089648
    1
    GASKET, TOP SET 4B
    C3901170
    8
    BRG, CON ROD STD B SERIES
    C3940059
    1
    BUSHING, CAMSHAFT B SERIES
    C4089618
    4
    KIT, PISTON, QSB 3.9, 0.50 MM
    C4891178
    4
    BUSHING, CON ROD B SERIES
         COK9619/4 1.00 mm Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C3802375
    1
    GASKET, BOTTOM SET 4B
    C4089648
    1
    GASKET, TOP SET 4B
    C3901170
    8
    BRG, CON ROD STD B SERIES
    C3940059
    1
    BUSHING, CAMSHAFT B SERIES
    C4089619
    4
    KIT, PISTON, QSB 3.9, 1.00 MM
    C4891178
    4
    BUSHING, CON ROD B SERIES
    2) O/H Kit Fractured Rod
    COK9461F/4 Std (1)

    On Fracture Split Con Rods use: C3901170 x4 (or O/S) and C4893693 x4 (or O/S).

         Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C3802375
    1
    GASKET, BOTTOM SET 4B
    C3901170
    4
    BRG, CON ROD STD B SERIES
    C3940059
    1
    BUSHING, CAMSHAFT B SERIES
    C4089461
    4
    KIT, PISTON, QSB 3.9, STD
    C4089648
    1
    GASKET, TOP SET 4B QSB
    C4891178
    4
    BUSHING, CON ROD B SERIES
    C4893693
    4
    BRG, CON ROD, STD, B SERIES (LOWER)
         COK9618F/4 0.50 Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C3802375
    1
    GASKET, BOTTOM SET 4B
    C3901170
    4
    BRG, CON ROD STD B SERIES
    C3940059
    1
    BUSHING, CAMSHAFT B SERIES
    C4089618
    4
    KIT, PISTON, QSB 3.9, 0.50 MM
    C4089648
    1
    GASKET, TOP SET 4B QSB
    C4891178
    4
    BUSHING, CON ROD B SERIES
    C4893693
    4
    BRG, CON ROD, STD, B SERIES (LOWER)
         COK9619F/4 1.00 Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C3802375
    1
    GASKET, BOTTOM SET 4B
    C3901170
    4
    BRG, CON ROD STD B SERIES
    C3940059
    1
    BUSHING, CAMSHAFT B SERIES
    C4089619
    4
    KIT, PISTON, QSB 3.9, 1.00 MM
    C4089648
    1
    GASKET, TOP SET 4B QSB
    C4891178
    4
    BUSHING, CON ROD B SERIES
    C4893693
    4
    BRG, CON ROD, STD, B SERIES (LOWER)
    3) Engine I/F Kit
    CIK9461/4 Std Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C4089648
    1
    GASKET, TOP SET 4B
    C3901170
    8
    BRG, CON ROD STD B SERIES
    C3931602
    1
    GASKET, OIL PAN 4B
    C4089461
    4
    KIT, PISTON, QSB 3.9, STD
         CIK9618/4 0.50 mm Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C4089648
    1
    GASKET, TOP SET 4B
    C3901170
    8
    BRG, CON ROD STD B SERIES
    C3931602
    1
    GASKET, OIL PAN 4B
    C4089618
    4
    KIT, PISTON, QSB 3.9, 0.50 MM
         CIK9619/4 1.00 mm Click to view kit content
    CLOSE
    Item #:
    Quantity:
    Description:
    C3802010
    1
    BRG, MAIN SET STD 4B
    C4089648
    1
    GASKET, TOP SET 4B
    C3901170
    8
    BRG, CON ROD STD B SERIES
    C3931602
    1
    GASKET, OIL PAN 4B
    C4089619
    4
    KIT, PISTON, QSB 3.9, 1.00 MM
         SPEC SHEET - 4BT 3.9 QSB
  • 1) Piston & Ring Kit
    C4089461 Std C4089618 0.50 mm C4089619 1.00 mm
    Use 4
  • Main Bearing Set
    C3802010 Std C3802011 0.25 mm C3802012 0.50 mm C3802013 0.75 mm
    Use 1
  • Con Rod Bearing
    C3901170 Std C3901171 0.25 mm C3901172 0.50 mm C3901173 0.75 mm
    Rod bearings are priced and sold per shell
  • Fractured Con Rod Bearing
    C4893693 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 mm
    Rod bearings are priced and sold per shell
    • Piston Kit:

    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.

  • 1) Front Seal
    C3904353
    2) Rear Seal
    C3353978
    3) Crankshaft
    C3907803
    4) Front Seal Sleeve
    C3906080
    5) Rear Seal Sleeve
    C3906081
    6) Rectangular Seal
    C3912473
    7) Crankshaft, Gear
    C3901258
    8) Ring Gear
    C3903309 (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.
  • 1) Top Gasket Set
    C4089648
    2) Bottom Gsk Set
    C3802375
    3) Head Gasket
    C3921393
    4) Oil Pan Gasket
    C3931602
    5) Valve Cover Gsk
    C3902666
    6) Gear Housing Gsk
    C3916131
    7) Rear Cover Gsk
    C3928493
    8) Gear Cover Gasket
    C3918673 (9)

    Check for proper application.
  • 1) Bushing, Piston
    C4891178 x4
    2) Bushing, Cam
    C3940059 x1
    3) Bolt, Con Rod
    C3900919 x8 (6)

    Machine split connecting rod.

         C4891179 x8 (7)

    Fracture split connecting rod.
    4) Con Rod
    C3901569 (6)

    Machine split connecting rod.

         C4943979 (7)

    Fracture split connecting rod.
    5) Bolt, Ex Manifold
    C3944593 (10)

    Flanged Head Cap Screw.

         C3944655 (11)

    Studded Flange Cap Screw.
    6) Spacer, Ex. Manifold
    C3945252
  • 1) Camshaft
    C3925582 (8)

    Use ESN or application model to confirm correct Camshaft & Gear.
    2) Tappet
    C3925031
    3) Push Rod
    C3904679
    4) Rocker Arms
    C3910811 x4 C3910810 x4
    5) Camshaft Gear
    C3907431 (8)

    Use ESN or application model to confirm correct Camshaft & Gear.
    6) Camshaft Key
    C3902332
  • 1) Oil Cooler 7 Plt
    C3921557
    2) Oil Cooler Gasket
    C3926760
    3) Oil Cooler Gasket Filter Head
    C3942915
Valve Section
(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.