Overview
The ZF 4644.153.077 CLUTCH is a critical internal component designed for the WG 180 and WG 200 series transmissions. This OEM genuine part serves as the primary engagement mechanism, transferring torque from the engine to the gearbox input shaft. Positioned within the transmission housing assembly, this clutch pack controls power flow during gear shifts and stationary operation. The SKU 4644.153.077 is precision-engineered to ZF’s exacting tolerances, ensuring seamless integration with the TRANSMISSION HOUSING and related drivetrain components.
Symptoms of Failure
When the ZF 4644.153.077 clutch begins to wear, operators may notice several distinct failure indicators. Oil leaks around the bell housing often appear as the first sign, caused by degraded seals within the clutch assembly. Gear slipping under load is another common symptom, where the transmission unexpectedly loses power during acceleration or hill climbs. Delayed engagement when shifting from neutral to drive indicates worn friction plates. Additionally, burning clutch smell combined with erratic shifting patterns suggests the clutch pack is overheating and requires immediate replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.153.077 |
| OEM Reference | ZF 4644.153.077 |
| Material | Sintered steel friction plates with carbon composite |
| Weight | 2.8 kg (6.2 lbs) |
| Outer Diameter | 180 mm |
| Inner Diameter | 120 mm |
| Thickness | 45 mm (assembled) |
| Torque Capacity | 1,200 Nm |
| Operating Temperature | -40°C to +120°C |
Compatibility
This clutch is engineered for the ZF WG 180 and WG 200 transmission families. It is directly compatible with WG 180, WG 200, and WG 200 Series models. The part also fits select variants of the ZF Ecomat and Ecolife series when used with the appropriate DISCONNECTION assembly and OUTPUT FLANGE. Always verify the HEXAGON SCREW torque specifications during installation to ensure proper clamping force.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105413 | DISCONNECTION | Isolates clutch from transmission during service |
| 4642303093 | OUTPUT FLANGE | Connects clutch output to driveshaft |
| 0636021010 | HEXAGON SCREW | Secures clutch pack to input shaft |
| 4644101040 | TRANSMISSION HOUSING | Encloses clutch and gear assembly |
| 4644301197 | TRANSMISSION HOUSING | Alternate housing for WG 200 variants |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for clutch housing |
| 0636015073 | HEXAGON SCREW | Fastener for output flange attachment |
| 0634801250 | SEALING RING | Prevents oil leakage at clutch hub |
| 0636305026 | SCREW PLUG | Closes oil passages during maintenance |
