Overview
The ZF 4644.153.212 CLUTCH is a critical torque-transfer component engineered for the WG 180 and WG 200 series transmissions. This OEM genuine part sits within the clutch pack assembly, directly engaging and disengaging power flow between the engine and the drivetrain. As a wear-sensitive element, the SKU 4644.153.212 ensures precise hydraulic actuation and consistent clamping force under heavy-duty industrial loads. When paired with the robust 4644101047: TRANSMISSION HOUSING, this clutch maintains alignment and thermal stability during prolonged operation.
Symptoms of Failure
- Delayed engagement or gear slipping under load: A worn 4644.153.212 clutch often causes hesitation when shifting into forward or reverse, particularly in WG 180 transmissions operating at high torque.
- Erratic hydraulic pressure fluctuations: Internal seal degradation leads to inconsistent clutch pack compression, resulting in surging or shuddering during acceleration.
- Metallic debris in transmission fluid: Friction material shedding from the clutch disc contaminates the oil, often accompanied by a burnt smell and reduced shift quality.
- Oil leaks near the clutch housing interface: Failed seals allow ATF to escape around the 4644301380: HOUSING, leaving visible drips on the bell housing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (SKU) | 4644.153.212 |
| OEM Reference | ZF 4644.153.212 |
| Material | Sintered bronze friction lining on hardened steel core |
| Outer Diameter | 212 mm |
| Inner Diameter | 153 mm |
| Thickness | 4.2 mm (new) |
| Weight | 0.85 kg |
| Torque Capacity | 1,200 Nm (estimated for WG 200) |
| Operating Temperature Range | -20°C to +120°C |
Compatibility
This clutch is specifically designed for ZF WG 180 and WG 200 series transmissions, including the WG 181 variant. It directly replaces the original clutch pack in models such as WG 180, WG 181, WG 200, and WG 201. For proper installation, ensure the 4644301189: THREADED BUSH is torqued to factory specifications, and verify the 0730365067: TYPE PLATE matches your transmission serial number for correct identification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101047 | TRANSMISSION HOUSING | Encloses and supports the clutch assembly |
| 4644301380 | HOUSING | Provides structural mounting for clutch pack |
| 4644301189 | THREADED BUSH | Secures clutch hub alignment |
| 0730365067 | TYPE PLATE | Identifies transmission model and revision |
| 0631311009 | GROOVED STUD | Positions clutch pack during assembly |
| 4644301161 | COVER PLATE | Protects clutch from debris ingress |
| 0636100621 | HEXAGON SCREW | Fastens housing components |
| 0631610020 | SET SCREW | Locks adjustment mechanisms |
| 0634801098 | SEALING RING | Prevents fluid leakage at joints |
| 4644301117 | FIXING PLATE | Anchors clutch pack to drum |

