Overview
The ZF 4644.152.534 COUPLING is a precision-engineered component designed for the WG 180 and WG 200 series transmissions. This OEM genuine part serves as the critical mechanical link between the engine output and the transmission input, ensuring smooth torque transfer and vibration dampening during operation. Positioned directly within the driveline assembly, the SKU 4644.152.534 interfaces with the 4644105423: DISCONNECTION mechanism to facilitate seamless gear engagement. Manufactured to ZF’s exacting tolerances, this coupling maintains alignment integrity under high-load conditions, reducing stress on adjacent components such as the 4644303054: OUTPUT FLANGE and the 4644101229: TRANSMISSION HOUSING.
Symptoms of Failure
When the ZF 4644.152.534 coupling begins to wear, operators typically notice several distinct performance issues. Transmission shudder during acceleration is a primary indicator, often caused by degraded elastomeric elements within the coupling. Oil seepage around the bell housing frequently occurs as the coupling’s sealing surface deteriorates, leading to fluid loss and potential overheating. Abnormal gear engagement noise—specifically a clunking or grinding sound when shifting—signals that the coupling’s splines have worn. Finally, reduced power transfer efficiency manifests as sluggish response under load, which can be mistaken for engine trouble but originates from the coupling’s inability to maintain positive drive connection.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4644.152.534 |
| Material | High-strength alloy steel with rubber dampener |
| Outer Diameter | 180 mm (estimated) |
| Inner Spline Diameter | 45 mm (estimated) |
| Weight | 4.2 kg (estimated) |
| Torque Capacity | 1,200 Nm (estimated) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF coupling is specifically engineered for the WG 180 and WG 200 transmission series. It is also compatible with select variants of the WG 160 and WG 220 models when used with the appropriate 4475280078: ADAPTER. The part directly replaces OEM couplings in ZF Ecolife and Ecomat 4-series transmissions that share the WG platform architecture. For proper installation, ensure the 0636021010: HEXAGON SCREW is torqued to factory specifications, and verify housing alignment using the 4644301227: TRANSMISSION HOUSING as a reference point.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105423 | DISCONNECTION | Engages/disengages coupling from driveline |
| 4644303054 | OUTPUT FLANGE | Transfers torque to driveshaft |
| 0636021010 | HEXAGON SCREW | Secures coupling to transmission |
| 4644101229 | TRANSMISSION HOUSING | Encloses and supports coupling assembly |
| 4644301227 | TRANSMISSION HOUSING | Alternate housing variant for WG 200 |
| 4475280078 | ADAPTER | Adapts coupling to non-standard bell housings |
| 0730365067 | TYPE PLATE | Identification label for transmission series |
| 0631311009 | GROOVED STUD | Alignment pin for coupling installation |
| 4644301298 | COVER PLATE | Protects coupling from debris ingress |
| 0634306525 | O-RING | Seals coupling-to-housing interface |
