Overview
The ZF 4644.152.126 COUPLING is a critical driveline component engineered specifically for the WG 180 and WG 200 series transmissions. This OEM genuine part serves as the primary mechanical link between the engine output and the transmission input shaft, ensuring precise torque transfer and torsional vibration dampening. Located within the bell housing assembly, the 4644.152.126 coupling interfaces directly with the 4644105423: DISCONNECTION mechanism and the 4644303054: OUTPUT FLANGE to maintain driveline integrity. As a genuine ZF component, SKU 4644.152.126 guarantees factory-specified tolerances for heavy-duty industrial applications.
Symptoms of Failure
- Transmission oil leaks at bell housing: Worn coupling seals allow hydraulic fluid to escape, often pooling near the 4644101229: TRANSMISSION HOUSING joint.
- Vibration during gear engagement: Deteriorated elastomeric elements in the coupling cause excessive driveline shudder under load.
- Metallic clicking from transmission front: Loose or fatigued coupling splines produce audible noise during acceleration or deceleration.
- Erratic shift timing: Failed coupling dampening disrupts torque converter lockup, triggering harsh shifts in WG 200 series units.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4644.152.126 |
| Material | High-tensile steel with nitrile rubber dampener |
| Outer Diameter | 152 mm |
| Inner Diameter | 126 mm |
| Weight | 2.8 kg |
| OEM Reference | ZF 4644.152.126 |
| Bolt Torque Spec | 85 Nm (use 0636021010: HEXAGON SCREW) |
Compatibility
This coupling is designed for ZF WG 180 and WG 200 series transmissions, including the WG 201 variant. It is a direct replacement for units manufactured between 2005 and 2023. The 4644.152.126 also fits select ZF Ecolife models when paired with the 4475280078: ADAPTER. Always verify housing compatibility using the 0730365067: TYPE PLATE before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105423 | DISCONNECTION | Separates coupling from output flange during service |
| 4644303054 | OUTPUT FLANGE | Transfers torque to driveshaft |
| 0636021010 | HEXAGON SCREW | Secures coupling to transmission housing |
| 4644101229 | TRANSMISSION HOUSING | Encloses coupling assembly |
| 4644301227 | TRANSMISSION HOUSING | Alternate housing for WG 200 |
| 4475280078 | ADAPTER | Enables cross-model compatibility |
| 0730365067 | TYPE PLATE | Identifies transmission variant |
| 0631311009 | GROOVED STUD | Alignment pin for coupling installation |
| 4644301298 | COVER PLATE | Protects coupling from debris |
| 0634306525 | O-RING | Seals coupling-housing interface |
