Overview
The ZF 4651.151.011 COUPLING is a critical driveline component engineered specifically for the WG 100 and WG 110 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 rotational alignment. Positioned within the bell housing assembly, the 4651.151.011 coupling absorbs torsional vibrations and compensates for minor misalignment during operation. As a direct replacement for the WG 100 Series, this SKU is manufactured to ZF’s exacting tolerances, guaranteeing seamless integration with adjacent components such as the 4651101007: TRANSMISSION HOUSING and the 4651301029: HOUSING.
Symptoms of Failure
When the 4651.151.011 coupling begins to degrade, operators will notice distinct performance issues. Transmission gear slipping under load is a primary indicator, often accompanied by a clunking noise during acceleration or deceleration. Oil leaks near the bell housing frequently occur as the coupling’s seal surface wears, allowing transmission fluid to escape. Vibration at highway speeds that intensifies with RPM changes signals coupling wear, while difficulty engaging gears—particularly in reverse—points to compromised coupling integrity. These symptoms often require simultaneous inspection of the 0634303928: O-RING and the 4651301024: HOUSING for complete assembly health.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4651.151.011 |
| Outer Diameter | 180 mm (7.09 in) |
| Inner Diameter | 65 mm (2.56 in) |
| Overall Length | 95 mm (3.74 in) |
| Material | Heat-treated alloy steel with nitrided surface |
| Weight | 2.4 kg (5.3 lbs) |
| OEM Reference | ZF 4651.151.011 |
| Torque Capacity | 1,200 Nm (885 ft-lbs) |
| Operating Temperature | -40°C to +120°C |
Compatibility
This coupling is engineered for the ZF WG 100 and WG 110 transmission families, which are widely used in medium-duty commercial vehicles, construction equipment, and agricultural machinery. It is also compatible with the WG 180 and WG 200 series transmissions when used in specific torque converter configurations. The 4651.151.011 directly interfaces with the 4651101007: TRANSMISSION HOUSING and the 4651301029: HOUSING in these models. For WG 250 and WG 300 series applications, verify bell housing dimensions before installation, as adapter plates may be required.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Encloses and supports gear train assembly |
| 4651301029 | HOUSING | Rear housing for output shaft support |
| 0634303928 | O-RING | Seals housing joint against fluid leaks |
| 4651301024 | HOUSING | Intermediate housing for clutch pack |
| 4651203002 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4651303005 | SCREEN SHEET | Secondary filtration for valve body |
| 0636101032 | CAP SCREW | Secures housing to transmission case |
| 0630361028 | SEALING CAP | Closes unused hydraulic ports |
| 4475280060 | SCREW PLUG | Drain or fill port closure |
| 0634303312 | O-RING | Seals screw plug against pressure loss |
