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Fast 12JSD180TA Transmission Accessories - Control Device, Single H-Valve & Auxiliary Case Drive Gear Assembly Replacement Parts

OEM-Grade 12JSD180TA Transmission Components

Precision-Machined Control, Valve & Gear Assembly Parts for Heavy-Duty Trucks & Mining Machinery

    Application & Compatibility

    微信图片_20260110145350_21796_151

    Model

    12JSD180TA

    Brand

    Fast

    Number of Gears

    12 forward gears + 2 reverse gears

    Shifting Mode

    Manual with full synchronizer

    Maximum Input Torque

    1800N·m

    Adapted Vehicles

    Heavy commercial vehicles: 8×4 cargo trucks, 6×4 tractors (e.g., Sinotruk, Shaanxi Auto heavy-duty trucks)

    Construction machinery: Mining dump trucks, large loaders

    Product Description

    These OEM-compatible parts are exclusively engineered for the Fast 12JSD180TA 12-speed manual transmission, specifically designed to fit heavy-duty application scenarios such as long-haul logistics, mining transportation, and construction machinery operations.


    Crafted from high-quality materials—alloy steel for gears and shafts, wear-resistant rubber for seals and gaskets, and durable engineering plastics for valve components—each part undergoes professional precision processing. Key processes include forging, heat treatment (carburizing and quenching), CNC machining, and assembly calibration, ensuring compliance with the transmission’s 1800N·m maximum input torque and 2600rpm rated speed requirements. Strict dimensional accuracy and performance inspections guarantee full compatibility with original equipment.


    Control Device Assembly Parts

    Lateral shift lever, dual H-valve, positioning plunger, compression spring, shift joint, and spline sleeve—core components that ensure accurate gear selection and stable shifting control during heavy-load operations.

    Single H-Valve Assembly Parts

    Single H-valve, air pipe assembly, 90° quick-connect fitting, and vent plug—supporting reliable range shift switching and air circuit sealing for the 12JSD180TA transmission.

    Auxiliary Case Drive Gear Assembly Parts

    Auxiliary case drive gear, bearing support, stop ring, main shaft gear washer, and radial ball bearing—delivering stable power transmission for the auxiliary case and enhancing overall transmission efficiency.


    Adopting a direct-fit design, these parts require no modification during installation and are fully interchangeable with original components. They are ideal for routine maintenance, emergency repairs, and bulk procurement by commercial vehicle fleets or repair workshops.

    Detail Parts List

    1Control Device Assembly

    7-

    No.

    Parts No.

    Part Name

    Qty.

    1

    F96035-48

    LRC External Shift Arm

    1

    2

    GB21-76

    Small Hexagon Head Bolt (M10×1× 50)

    1

    3

    GB93-76

    Spring Washer (10)

    1

    4

    Q34110

    Hexagon Nut

    1

    5

    F91444

    Oil Seal

    1

    6

    Q150B1025

    Hexagon Head Bolt

    3

    7

    Q40310

    Spring Washer

    3

    8

    F91345

    Lateral Shift Lever Bushing

    2

    9

    C03033-5

    End Cover

    1

    10

    C03034-1

    Baffle Gasket

    1

    11

    C03032-6

    Shift Joint

    1

    12

    C03031-1

    Spline Sleeve

    1

    13

    12JS160T-1703017-7

    Lateral Shift Lever

    1

    14

    GB879-76

    Elastic Cylinder Pin (Pin 6x35)

    2

    15

    F99681

    Low/Reverse Gear Switch Control Block

    1

    16

    12JS160T-1703018-1

    Shift Head

    1

    17

    C03030

    Cylinder Pin

    1

    18

    990_12_71_0041-5

    Pressure Switch (Neutral)

    1

    23

    0068DS-1

    Pressure Switch (Reverse)

    1

    24

    F99670

    Positioning Plunger

    2

    25

    F96037-1

    Compression Spring

    2

    26

    F96140

    Gasket

    2

    27

    F96141

    Spring Cover

    2

    28

    C03038-7

    Gear Selection Joint

    1

    29

    C03040-1

    Positioning Screw

    2

    30

    Q5510628

    Flat Key

    1

    31

    C03036-1

    Window Cover

    1

    32

    C03037-1

    Window Gasket

    1

    33

    15276

    Vent Plug

    1

    34

    C03004

    Stop Screw

    1

    35

    F96194-33-Y

    Dual H-Control Device Housing

    1

    36

    C03035-1

    Gear Selection Shift Head

    1

    37

    HG4-333-66

    O-Ring (20x2.4)

    1

    38

    C03039-1

    Washer

    1

    39

    Q170B1016

    Hexagon Head Bolt with Hole in Head

    1

    40

    7935

    Vent Plug

    2

    41

    55521

    Air Pipe Assembly

    1

    42

    F91353

    Dual H-Valve Gasket

    1

    43

    F99660

    Dual H-Valve

    1

    44

    GB93-76

    Spring Washer (Size 6)

    2

    45

    GB70-76

    Hexagon Socket Head Cap Screw (M6x 18)

    2

    46

    55506

    Air Pipe Assembly

    2

    47

    12880

    45 Elbow Pipe Fitting

    1

    48

    GB859-76

    Spring Washer (Size 8)

    4

    49

    GB21-76

    Small Hexagon Head Bolt (M8x 12)

    4

    50

    F99675

    Positioning Ring

    1

    51

    F96036-1

    Compression Spring

    1

    52

    F99673

    Spring Seat

    2

    53

    F99674

    Spring Spacer

    1

    54

    F99983-1

    Compression Spring

    1

    55

    F99672

    End Pad

    1

    56

    F99666

    Side Plate

    1

    57

    GB93-76

    Spring Washer 8

    4

    58

    GB21-76

    Small Hexagon Head Bolt (M8x22)

    4

    59

    1819

    Iron Wire(Φ1.2)

    As Required

    2、Single H-Valve Assembly

    8-

    No.

    Parts No.

    Part Name

    Qty.

    1

    7935-2

    Vent Plug

    2

    2

    C01051

    Straight Pipe Fitting

    3

    3

    66605

    Air Pipe Assembly

    1

    4

    66606

    Air Pipe Assembly

    1

    5

    66607

    Air Pipe Assembly

    1

    6

    12JS160T-1703021

    90° Quick-Connect Fitting

    1

    7

    12JS160T-1703052

    Single H-Valve

    1

    3、Auxiliary Case Drive Gear Assembly

    10-

    No.

    Parts No.

    Part Name

    Qty.

    1

    12JS160T-1701107

    Reverse Gear Retaining Ring

    1

    2

    12JS160T-1701106

    Main Shaft Gear Washer

    1

    3

    12JS160T-1701124

    Bearing Support

    1

    4

    50118

    Single-Row Radial Ball Bearing with Snap Groove

    1

    5

    C01019

    Stop Ring

    1

    6

    JS220-1707031

    Auxiliary Case Bearing Positioning Plate

    1

    7

    C09032

    Hexagon Head Bolt with Hole in Head

    6

    8

    1819

    Iron Wire

    As Required

    9

    12JSD200T-1707030

    Auxiliary Case Drive Gear

    1

    10

    16763

    Stop Ring

    1

    Product Advantages

    Model-Exact Compatibility
    100% matched to the original dimensions and assembly standards of Fast 12JSD180TA, eliminating fitment issues for heavy-duty truck repairs.
    Heavy-Duty Durability
    High-strength alloy steel and wear-resistant materials withstand extreme conditions like mining and construction, significantly extending part service life.
    Precise & Stable Control
    Precision-machined control device and H-valve components ensure smooth gear shifting and reliable range switching, even under high vibration.
    Efficient Maintenance
    Modular design allows quick and easy part replacement without disassembling the entire transmission, reducing downtime for fleet operations.
    Wide Application Adaptation
    Perfectly fits heavy-duty trucks, mining dump trucks, and construction machinery—covering all core application scenarios of the 12JSD180TA transmission.

    Payment & Shipping Terms

    MOQ: 1 piece

    Packaging: Customizable wooden crate/carton

    Delivery: 3-20 working days (express: DHL/FedEx; sea freight for bulk)

    Payment: L/C, T/T, Western Union; tracking number provided in 24hrs

    ● After-Sales Service:24-hour technical support, global service network

     

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