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

|
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

|
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

|
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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Mr. Perry Wu International Sales Director