Overview
The ZF 4661.176.005 COUPLING is a critical torque-transfer component engineered specifically for the WG 90 and WG 94 series transmissions. This OEM genuine part serves as the mechanical link between the engine output and the transmission input shaft, ensuring smooth power delivery and dampening torsional vibrations. The SKU 4661.176.005 is precision-machined to ZF’s exacting tolerances, making it an essential element for maintaining driveline integrity in heavy-duty industrial applications. When installed correctly, this coupling works in concert with the 4661101024: TRANSMISSION HOUSING and the 4661301054: HOUSING II to create a sealed, robust assembly that withstands high cyclic loads.
Symptoms of Failure
When the ZF 4661.176.005 coupling begins to degrade, operators may notice distinct operational issues. Transmission gear slipping under load is a primary indicator, often accompanied by a pronounced clunking noise during acceleration or deceleration. Oil leaks near the bell housing interface can occur as the coupling’s sealing surface wears, allowing transmission fluid to escape. Another common symptom is excessive driveline vibration at specific RPM ranges, which progressively worsens as the coupling’s elastomeric elements harden or crack. Finally, erratic shift timing or harsh engagement may develop, as the worn coupling fails to properly dampen input shaft oscillations, confusing the transmission’s hydraulic control system.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4661.176.005 |
| Material | High-strength alloy steel with elastomeric damping insert |
| Outer Diameter | 176 mm |
| Inner Diameter | 60 mm |
| Overall Length | 85 mm |
| Weight | 2.4 kg |
| OEM Reference | ZF 4661.176.005 |
| Torque Capacity | 1,200 Nm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This coupling is designed for the ZF WG 94 series transmission family, with direct fitment to WG 90 and WG 94 models. It is also compatible with the WG 180 and WG 200 variants when used with the appropriate adapter kit. The part integrates seamlessly with the 0631306174: CYLINDRICAL PIN for precise alignment during installation. For identification purposes, the 0769123894: TYPE PLATE should be referenced to confirm transmission model compatibility before ordering. This coupling is not recommended for use in WG 120 or WG 150 series without consulting ZF technical documentation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101024 | TRANSMISSION HOUSING | Encloses and protects internal gear train |
| 4661301054 | HOUSING II | Secondary housing for valve body assembly |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for coupling installation |
| 0769123894 | TYPE PLATE | Identification plate for transmission model |
| 0750100022 | SCREW PLUG | Seals hydraulic test ports |
| 4660201008 | SCREW PLUG | Oil drain plug for housing |
| 0636100117 | SCREW PLUG | Pressure port sealing plug |
| 0501211384 | VALVE | Modulates hydraulic pressure for shifting |
| 0732042156 | COMPRESSION SPRING | Provides return force for valve spool |
| 0768409154 | SCREW PLUG | Seals cooler line ports |
