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| 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), Construction machinery (Mining dump trucks, large loaders) |
These parts are engineered to original specifications, exclusively for the 12JSD180TA 12-speed manual transmission. Built for heavy-duty scenarios like long-haul transport, mining, and construction, they ensure seamless compatibility.
Crafted from high-quality materials—alloy steel for shafts, wear-resistant alloy for shifting components, durable rubber for seals—all parts undergo precision processing (forging, heat treatment, CNC machining) to meet 1800N·m max torque and 2600rpm rated speed. Strict quality checks guarantee OEM compliance.
Input Shaft Assembly: Includes input shaft, radial ball bearing with stop groove, gear spacer, stop ring, and flattened wire circlip for stable torque input.
Reverse Idler Shaft Assembly: Includes reverse idler shaft, idler gear, needle bearing, cup-shaped reverse washer, and slotted set screw.
Top Cover Assembly: Includes shift forks, fork shafts, guide blocks, steel balls, compression springs, and interlock pins.
| No. | Parts No. | Part Name | Qty. |
|---|---|---|---|
| 1 | 16980 | Flattened Wire Circlip for Shaft | 1 |
| 2 | C01021 | Stop Ring | 1 |
| 3 | 150212K | Single-Row Radial Ball Bearing | 1 |
| 4 | 16463 | Gear Spacer | 1 |
| 5 | 14750 | Stop Ring | 1 |
| 6 | JS180A-1701030-S | Input Shaft | 1 |
| 7 | 16566 | Second Shaft Bushing | 1 |
| No. | Parts No. | Part Name | Qty. |
|---|---|---|---|
| 1 | 12JS160T-1701084 | Cup-Shaped Reverse Washer | 1 |
| 2 | 12JS200T-1701083 | Reverse Idler Gear | 1 |
| 3 | DS100-1701085 | Needle Bearing | 1 |
| 4 | JS220-1701082 | Reverse Idler Shaft | 1 |
| 5 | Q2821212 | Slotted Flat-End Set Screw | 1 |
| No. | Parts No. | Part Name | Qty. |
|---|---|---|---|
| 1 | 12_7G100BGB-T308 | Steel Ball | 4 |
| 2 | 19_05G100BGB-T308 | Steel Ball | 3 |
| 3 | 1634 | Shift Fork Shaft Interlock Pin | 2 |
| 4 | 3220 | Shift Fork Lock Screw | 3 |
| 5 | 11066 | Stud Bolt | 4 |
| 6 | 12JS160T-1702012-Y | Top Cover Assembly | 1 |
100% matched to original dimensions, ensuring hassle-free fit without adjustments.
Alloy steel input shaft with precision processing delivers reliable torque transmission for high-load conditions.
High-quality reverse idler shaft and gear ensure stable power output and reduced operational noise.
Precision-machined top cover components guarantee accurate gear positioning and responsive shifting.
Modular design allows quick replacement without disassembling the entire transmission, saving labor costs.
