Overview
The ZF 4651.151.010 COUPLING is a critical torque-transfer component engineered specifically for the WG 100 and WG 110 transmission series. This OEM genuine part acts as the mechanical link between the engine output and the transmission input shaft, ensuring smooth power delivery and vibration dampening during operation. Positioned directly within the driveline assembly, the SKU 4651.151.010 interfaces with the 4651101007: TRANSMISSION HOUSING to maintain precise alignment and load distribution. Without this coupling, the transmission cannot effectively transfer rotational force, making it indispensable for maintaining drivetrain integrity in heavy-duty industrial applications.
Symptoms of Failure
- Transmission shudder or vibration during acceleration – A worn 4651.151.010 coupling loses its dampening capacity, causing noticeable shaking through the chassis when torque is applied.
- Metallic clicking or clunking from the bell housing area – As the coupling splines wear, you will hear distinct impact noises during gear engagement or load changes.
- Fluid contamination with metallic particles – Degradation of the coupling material sheds debris into the transmission fluid, often visible during routine oil changes.
- Intermittent power loss or hesitation – A failing coupling slips under high load, resulting in delayed response when accelerating from a stop or climbing grades.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4651.151.010 |
| Material | High-strength alloy steel with nitrided surface |
| Outer Diameter | 110 mm |
| Inner Spline Diameter | 45 mm |
| Overall Length | 85 mm |
| Weight | 1.45 kg |
| OEM Reference | ZF 4651.151.010 |
| Torque Capacity | 1,200 Nm |
Compatibility
This coupling is designed for the ZF WG 100 and WG 110 series transmissions, commonly found in municipal trucks, refuse vehicles, and medium-duty construction equipment. It also fits select variants of the WG 180 and WG 200 models when used with the appropriate 4651301029: HOUSING adapter. For proper sealing during installation, always replace the 0634303928: O-RING and verify alignment with the 4651301024: HOUSING to prevent premature wear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Encloses and supports the gear train assembly |
| 4651301029 | HOUSING | Mounts the coupling and aligns input shaft |
| 0634303928 | O-RING | Seals housing interface to prevent fluid leaks |
| 4651301024 | HOUSING | Secondary housing for coupling support |
| 4651203002 | SCREEN SHEET | Filters debris from transmission fluid flow |
| 4651303005 | SCREEN SHEET | Secondary filtration for hydraulic circuit |
| 0636101032 | CAP SCREW | Fastens housing components with precise torque |
| 0630361028 | SEALING CAP | Closes unused ports to maintain pressure |
| 4475280060 | SCREW PLUG | Seals threaded access points in housing |
| 0634303312 | O-RING | Provides secondary seal for plug interfaces |
