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Mr. Perry Wu International Sales Director
FAST 8JS85C/85E Gearbox Parts - Clutch/Transmission Case/Second Shaft/Countershaft Assembly
|
Model |
8JS85C/85E |
|
Brand |
Fast |
|
Number of Gears |
8 forward gears + 2 reverse gears |
|
Shifting Mode |
Manual Transmission |
|
Maximum Input Torque |
850 N.m |
|
Adapted Vehicles |
Suitable for harsh working conditions and high-intensity heavy-duty operations, widely applied in buses, coaches, trucks, tractors, trailers and special vehicles |
Product Description
These parts are engineered exclusively for the FAST 8JS85C/85E 8-speed manual gearbox, tailored to heavy-duty scenarios like long-haul transportation, logistics and special vehicle operations.
Crafted from premium materials—high-strength steel for shafts and gears, wear-resistant rubber for seals, and durable engineering plastics for structural components—all parts undergo professional precision processing. Key processes include forging, heat treatment, CNC machining and assembly calibration, meeting the gearbox’s 850 N.m maximum input torque requirement. Strict dimensional accuracy and performance inspections ensure full compatibility with original equipment.
Clutch and 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-2nd/overdrive/reverse gears and synchronizer sleeves—core components for smooth power transmission and gear shifting.
Left and Right Countershaft Assembly Parts
Countershafts, drive gears, spacer sleeves and cylindrical roller bearings—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 |
C09034 |
Pre-Coated Hexagon Head Bolt with Hole in Head andSpring Washer Assembly |
2 |
|
2 |
JS85T-1701040 |
Input Shaft Bearing Cover |
1 |
|
3 |
Q1421032M |
Pre-Coated Hexagon Head Bolt and Spring WasherAssembly |
4 |
|
4 |
B1280G |
O-Ring |
1 |
|
5 |
F91410 |
Input Shaft Bearing Cover Oil Seal |
1 |
|
6 |
Q1420840 |
Hexagon Head Bolt and Spring Washer Assembly |
1 |
|
7 |
C04012-2 |
Clutch Release Fork |
1 |
|
8 |
Q5280312 |
Elastic Cylinder Pin |
2 |
|
10 |
J75-1601033 |
Lubrication Hose Assembly |
1 |
|
11 |
J75-1601031 |
Pipe Fitting |
1 |
|
12 |
Q72310T3 |
Gasket |
2 |
|
13 |
85CT5740F3 |
Self-Aligning Clutch Release Bearing Unit |
1 |
|
14 |
Q5510825 |
Flat Key |
1 |
|
15 |
JS85T-1701042 |
Input Shaft Bearing Cover Gasket |
1 |
|
16 |
GB889-80-M16X1.5 |
Hexagon Nut with Nylon Insert |
6 |
|
17 |
Q40116 |
Flat Washer |
6 |
|
18 |
Q1421238M |
Pre-Coated Hexagon Head Bolt and Spring WasherAssembly |
2 |
|
19 |
C01056 |
Stud Bolt |
6 |
|
20 |
JS85T-1601015-9 |
Clutch Housing |
1 |
|
21 |
J75-1601034 |
Grease Cup Cover |
1 |
|
22 |
J75-1601035 |
Grease Cup Seat |
1 |
|
23 |
Q40310 |
Spring Washer |
1 |
|
24 |
J75-1601036 |
Bushing |
2 |
|
25 |
C04004-6 |
Inspection Window Cover |
1 |
|
26 |
Q40308 |
Spring Washer |
2 |
|
27 |
Q150B0812 |
Hexagon Head Bolt |
2 |
|
28 |
JS85T-1601016 |
Clutch Housing Gasket |
1 |
|
29 |
JS85E-1701015 |
Transmission Case |
1 |
|
30 |
Q1420650 |
Hexagon Head Bolt and Spring Washer Assembly |
4 |
|
31 |
12JS160T-1703021 |
90° Quick-Connect Fitting |
2 |
|
32 |
12845 |
90° Elbow Pipe Fitting |
3 |
|
33 |
A-5000 |
Servo Valve Assembly |
1 |
|
34 |
19481 |
Servo Valve Gasket |
1 |
|
35 |
21446-1 |
Servo Valve Guide Sleeve |
1 |
|
36 |
14033 |
O-Ring |
1 |
|
37 |
14197 |
O-Ring |
1 |
|
38 |
21268 |
Compression Spring |
1 |
|
39 |
20490 |
Servo Valve Plunger |
1 |
|
40 |
14373 |
Round Magnet |
2 |
|
41 |
Q1421032 |
Hexagon Head Bolt and Spring Washer Assembly |
6 |
|
42 |
JS85T-1701020-1-Y |
PTO Window Cover |
1 |
|
43 |
JS85T-1701021-1 |
PTO Window Gasket |
1 |
|
44 |
6JS160T-1709588-1 |
O-Ring |
2 |
|
45 |
6JS160T-1709587-1 |
Pipe Plug |
2 |
|
46 |
JS125T-1707075 |
Auxiliary Case Locating Pin |
2 |
2、Second Shaft Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
JS85T-1701105 |
Second Shaft |
1 |
|
2 |
JS85T-1701129 |
Long Key |
1 |
|
3 |
JS85T-1701122 |
Stop Ring |
6 |
|
4 |
JS85E-1701110 |
Second Shaft Reverse Gear |
1 |
|
5 |
JS85T-1701127 |
Reverse Spline Washer |
1 |
|
6 |
JS85T-1701126 |
Spline Washer |
3 |
|
7 |
JS85T-1701125 |
Reverse Synchronizer Sleeve |
1 |
|
8 |
JS85T-1701126 |
1st Gear Spline Washer |
1 |
|
9 |
JS85E-1701111 |
Second Shaft 1st Gear |
1 |
|
10 |
JS85A-1701107 |
1st/2nd Gear Synchronizer Sleeve |
1 |
|
11 |
JS85E-1701112 |
Second Shaft 2nd Gear |
1 |
|
12 |
JS85T-1701126 |
2nd Gear Spline Washer |
3 |
|
13 |
Q43460 |
Flattened Wire Circlip for Hole |
2 |
|
14 |
JS85E-1701113 |
Second Shaft Overdrive Gear |
1 |
|
15 |
JS85T-1701124 |
3rd Gear Spline Washer |
1 |
|
16 |
JS85T-1701122 |
Stop Ring |
1 |
|
17 |
JS85A-1701106 |
Brd/4th Gear Synchronizer Sleeve |
1 |
|
18 |
JS85E-1701031 |
Input Shaft Gear |
1 |
|
19 |
Q43460 |
Flattened Wire Circlip for Hole |
1 |
|
JS85E-1701100 |
|||
3、Left and Right Countershaft Assembly
|
No. |
Parts No. |
Part Name |
Qty. |
|
1 |
JS85E-1701048 |
Countershaft |
2 |
|
2 |
JS85T-1701055 |
Countershaft Square Key |
2 |
|
3 |
JS85E-1701052 |
Countershaft 2nd Gear |
2 |
|
4 |
JS85E-1701053 |
Countershaft Overdrive Gear |
2 |
|
5 |
JS85A-1701054 |
Spacer Sleeve |
2 |
|
6 |
JS85E-1701056 |
Countershaft Drive Gear |
2 |
|
7 |
JS85T-1701058 |
Stop Ring |
2 |
|
8 |
Q5280514 |
Elastic Cylinder Pin |
2 |
|
9 |
NCL306ENV-C3YA |
Cylindrical Roller Bearing |
4 |
|
10 |
Q43372 |
Flattened Wire Circlip for Shaft |
2 |
|
11 |
Q43130 |
Elastic Retaining Ring for Shaft |
4 |
Product Advantages
8JS85C/85E Exact Fit
100% matched to original dimensions, no fitment issues for heavy-duty repairs.
Heavy-Duty Durability
Withstands 850 N.m torque and harsh working conditions, extending service life.
Smooth Shifting Performance
Precision-machined gears and synchronizer sleeves ensure stable gear changes.
Reliable Power Transmission
High-strength countershaft and second shaft components guarantee consistent torque delivery.
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