Overview
The ZF 4660.172.005 COUPLING is a critical torque-transfer component engineered specifically for the WG 92 and WG 98 transmission series. This OEM genuine part sits between the engine flywheel and the transmission input shaft, acting as a flexible mechanical link that absorbs torsional vibrations and ensures smooth power delivery. The SKU 4660.172.005 is manufactured to ZF’s exacting tolerances, guaranteeing a precise fit within the driveline assembly. When installed alongside the 4660101009: TRANSMISSION HOUSING, this coupling maintains proper alignment and prevents axial load transfer to internal gear sets.
Symptoms of Failure
When the ZF 4660.172.005 coupling begins to degrade, operators often notice clunking noises during gear engagement as the torsional dampening fails. A second common symptom is visible oil seepage near the bell housing, caused by the coupling’s hub wearing against the 4660301026: HOUSING seal surface. You may also experience intermittent transmission shudder under load, particularly at low RPM ranges. Finally, metal debris in the transmission fluid often indicates the coupling’s splines have worn, requiring immediate replacement to avoid damage to the 0631306174: CYLINDRICAL PIN that secures the assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4660.172.005 |
| Outer Diameter | 172 mm |
| Hub Bore Diameter | 38 mm |
| Overall Length | 95 mm |
| Material | High-tensile steel with rubber dampening insert |
| Weight | 2.4 kg |
| OEM Reference | ZF 4660.172.005 |
| Torque Capacity | 1,200 Nm |
Compatibility
This coupling is designed for the ZF WG 92 Series and is also compatible with the WG 98 transmission models. It directly replaces the original coupling in WG180, WG200, and WG210 variants when used in off-highway vehicles, agricultural tractors, and industrial loaders. Always verify the spline count matches your existing 0769123894: TYPE PLATE specifications before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101009 | TRANSMISSION HOUSING | Encloses and supports internal gear sets |
| 4660301026 | HOUSING | Provides mounting surface for coupling assembly |
| 0631306174 | CYLINDRICAL PIN | Aligns and secures coupling to shaft |
| 0769123894 | TYPE PLATE | Identifies transmission model and specs |
| 0750100022 | SCREW PLUG | Seals oil passages in housing |
| 4660221029 | SUCTION TUBE | Directs oil flow to pump inlet |
| 0634100317 | O-RING | Prevents fluid leaks at joint interfaces |
| 0636103273 | CAP SCREW | Fastens housing components together |
| 0634306311 | O-RING | Seals coupling hub to shaft |
| 4660321029 | FIXING PLATE | Locks coupling in position |
