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Mr. Perry Wu International Sales Director
FAST 12JSDX240T Gearbox Parts - Case/Second Shaft/Right Countershaft Assembly Components
|
Model |
12JSDX240T |
|
Brand |
Fast |
|
Number of Gears |
12 forward gears + 2 reverse gears |
|
Shifting Mode |
Manual Transmission |
|
Maximum Input Torque |
2400 N.m |
|
Adapted Vehicles |
Suitable for harsh working conditions and heavy-duty operations, applied to heavy-duty trucks, construction machinery and other equipment requiring high-intensity work |
Product Description
These parts are engineered exclusively for the FAST 12JSDX240T 12-speed manual gearbox, tailored to heavy-duty scenarios like long-haul transportation, mining, and construction.
Crafted from premium materials—high-strength alloy steel for shafts/gears, wear-resistant rubber for seals, and durable ductile iron for cases—all parts undergo professional precision processing. Key processes include forging, heat treatment, CNC machining, and assembly calibration, meeting the gearbox’s 2400N.m maximum input torque requirement. Strict dimensional accuracy and performance inspections ensure full compatibility with original equipment.
Clutch & Transmission Case Assembly Parts
Clutch housing, transmission case, input shaft bearing cover, and gaskets—forming the gearbox’s structural foundation and sealing system.
Second Shaft Assembly Parts
Second shaft, 1st-5th/reverse gears, and synchronizer assemblies—core components for smooth power transmission and gear shifting.
Right Countershaft Assembly Parts
Right countershaft, drive gears, spacer sleeves, and square keys—supporting balanced torque distribution for heavy-load operations.
Direct-fit design allows hassle-free installation without modification, fully interchangeable with original parts. Ideal for routine maintenance, emergency repairs, and fleet bulk procurement.
Detail Parts List
1、 Clutch and Transmission Case Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
Q1701032 |
Small Hexagon Head Bolt with Hole in Head |
2 |
|
2 |
Q40310 |
Spring Washer |
2 |
|
3 |
JS180A-1701040 |
Input Shaft Bearing Cover |
1 |
|
4 |
Q150B1032 |
Hexagon Head Bolt |
4 |
|
5 |
Q40310 |
Spring Washer |
4 |
|
6 |
F500A-1802191 |
Skeleton Oil Seal Assembly |
1 |
|
7 |
14311 |
Input Shaft Bearing Cover Gasket |
1 |
|
8 |
Q150B1290 |
Hexagon Head Bolt |
2 |
|
9 |
Q40312 |
Spring Washer |
2 |
|
10 |
C01056 |
Stud Bolt |
6 |
|
11 |
Q40116 |
Flat Washer |
6 |
|
12 |
GB889-80 |
Hexagon Nut with Nylon Insert (M16x1.5) |
6 |
|
13 |
Q43125 |
Elastic Retaining Ring for Shaft |
2 |
|
14 |
JS180-1601029-1 |
Dust Cover |
2 |
|
15 |
Q43042 |
Elastic Retaining Ring for Hole |
2 |
|
16 |
JS180-1601030-2 |
Shift Fork Bushing |
2 |
|
17 |
GB304-64 UC25 |
Spherical Plain Bearing |
1 |
|
18 |
Q150B1235 |
Hexagon Head Bolt |
4 |
|
19 |
Q40312 |
Spring Washer |
4 |
|
20 |
JS180-1601024-6 |
Release Fork Bracket |
1 |
|
21 |
JS180-1601021-6 |
Shift Fork |
1 |
|
22 |
JS180-1601023-3 |
Release Fork Shaft |
1 |
|
23 |
J75-1601033 |
Release Bearing Lubrication Pipe Assembly |
1 |
|
24 |
J75-1601031 |
Pipe Fitting |
1 |
|
25 |
J75-1601035 |
Grease Cup Seat |
1 |
|
26 |
J75-1601034 |
Grease Cup Cover |
1 |
|
27 |
Q40310 |
Spring Washer |
1 |
|
28 |
Q72310T3 |
Sealing Washer |
2 |
|
29 |
A-3674-Y-75 |
Clutch Housing |
1 |
|
30 |
20822-7 |
Clutch Housing Gasket |
1 |
|
31 |
Q61304 |
Square Head Tapered Pipe Plug |
1 |
|
32 |
12JSDX160T-1701012-Y |
Transmission Case |
1 |
|
33 |
Q150B1225 |
Hexagon Head Bolt |
8 |
|
34 |
16596 |
Bottom PTO Window Cover |
1 |
|
35 |
16929 |
Bottom PTO Window Gasket |
1 |
|
36 |
Q614B06 |
Square Head Tapered Pipe Plug |
1 |
|
37 |
Q614B12 |
Square Head Tapered Pipe Plug |
1 |
|
38 |
14373 |
Round Magnet |
3 |
|
39 |
Q1231630 |
Stud Bolt |
2 |
|
|
Q40316 |
Spring Washer |
2 |
|
|
GB52-76 |
Hexagon Nut(M16x1.5) |
2 |
|
40 |
14334 |
Rear Cover Locating Pin |
2 |
|
41 |
C04004-6 |
Clutch Access Cover |
2 |
|
42 |
Q150B0812 |
Hexagon Head Bolt |
2 |
|
|
Q40308 |
Spring Washer |
2 |
2、Second Shaft Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
12JSDX240T-1701116 |
Input Shaft Gear |
1 |
|
2 |
9JS200T-1701123 |
Stop Ring |
6 |
|
3 |
12JSDX240T-1701190 |
Synchronizer Assembly |
1 |
|
4 |
9JS200T-1701122 |
Main Shaft Gear Washer |
8 |
|
5 |
12JSDX240T-1701115 |
Second Shaft 5th Gear |
1 |
|
6 |
12JSDX240T-1701114 |
Second Shaft 4th Gear |
1 |
|
7 |
12JSDX240T-1701180 |
Synchronizer Assembly |
1 |
|
8 |
12JSDX240T-1701113 |
Second Shaft 3rd Gear |
1 |
|
9 |
12JSDX240T-1701112-2 |
Second Shaft 2nd Gear |
1 |
|
10 |
12JSDX240T-1701170 |
Synchronizer Assembly |
1 |
|
11 |
12JSDX240T-1701111-1 |
Second Shaft 1st Gear |
1 |
|
12 |
12JSDX240T-1701108 |
Synchronizer Sleeve |
1 |
|
13 |
12JSDX240T-1701125 |
Second Shaft Reverse Gear Washer |
1 |
|
14 |
12JSDX240T-1701110 |
Second Shaft Reverse Gear |
1 |
|
15 |
12JSDX220T-1701121B |
Second Shaft Hex Key |
1 |
|
16 |
12JSDX240T-1701105 |
Second Shaft |
1 |
3、Right Countershaft Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
12JSDX240T-1701049-2 |
Right Countershaft |
2 |
|
2 |
X-6-E |
Woodruff Key |
2 |
|
3 |
Q5280514 |
Elastic Cylinder Pin |
2 |
|
4 |
16JS200T-1701055 |
Countershaft Square Key |
2 |
|
5 |
12JSDX240T-1701050 |
Countershaft 3rd Gear |
2 |
|
6 |
12JSDX240T-1701051 |
Countershaft 4th Gear |
2 |
|
7 |
12JSDX240T-1701052 |
Countershaft Overdrive Gear |
2 |
|
8 |
12JSDX240T-1701057 |
Spacer Sleeve |
2 |
|
9 |
12JSDX240T-1701056 |
Countershaft Drive Gear |
2 |
|
10 |
6DS100T-1701058 |
Countershaft Stop Ring |
2 |
Product Advantages
12JSDX240T Exact Fit
100% matched to original dimensions, no fitment issues for heavy-duty repairs.
Heavy-Duty Durability
Withstands 2400N.m torque and harsh working conditions, extending service life.
Smooth Power Transmission
Precision-machined gears and synchronizers ensure stable torque delivery.
Reliable Sealing Protection
High-quality gaskets and seals prevent oil leakage and dust intrusion.
Easy Maintenance
Modular design enables quick replacement without full gearbox disassembly.
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