Overview
The ZF 4651.151.013 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 interface between the engine output and the transmission input shaft, ensuring smooth power delivery and vibration dampening. The SKU 4651.151.013 sits within the clutch housing assembly, directly coupling rotational force while compensating for minor misalignment. Without this coupling, the transmission cannot engage properly, making it essential for maintaining driveline integrity in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 4651.151.013 begins to wear, operators often notice clunking noises during gear engagement, a clear sign of excessive backlash. Another common symptom is intermittent power loss under load, where the transmission hesitates or slips despite proper hydraulic pressure. You may also detect vibration at specific RPM ranges, particularly during acceleration, which indicates the coupling has lost its dampening capability. Finally, visible metal debris in the transmission oil filter points directly to coupling degradation, requiring immediate replacement to prevent damage to the 4651101014: TRANSMISSION HOUSING.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4651.151.013 |
| Material | High-tensile alloy steel with nitrided surface |
| Outer Diameter | 180 mm (7.09 in) |
| Inner Diameter | 65 mm (2.56 in) |
| Length | 95 mm (3.74 in) |
| Weight | 2.8 kg (6.17 lbs) |
| OEM Reference | ZF 4651.151.013 |
| Torque Capacity | 1,200 Nm (885 lb-ft) |
Compatibility
This coupling is precision-machined for the ZF WG 100 and WG 110 series transmissions, commonly found in municipal trucks, refuse vehicles, and medium-duty construction equipment. It is also compatible with the WG 180 and WG 200 series when used in conjunction with the 4651301029: HOUSING adapter. For proper sealing, always replace the 0634303928: O-RING during installation. In high-torque applications, verify fitment with the 4651301036: TRANSMISSION HOUSING to ensure correct spline engagement.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101014 | TRANSMISSION HOUSING | Encloses the gear train and supports shafts |
| 4651301029 | HOUSING | Adapter housing for coupling installation |
| 0634303928 | O-RING | Seals the coupling-to-housing interface |
| 4651301036 | TRANSMISSION HOUSING | Alternate housing for WG 180/200 series |
| 4651203002 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4651303005 | SCREEN SHEET | Secondary filtration for oil return line |
| 0636101032 | CAP SCREW | Fastens housing to transmission case |
| 0630361028 | SEALING CAP | Protects unused ports from contamination |
| 4475280060 | SCREW PLUG | Seals threaded oil passages |
| 0634303312 | O-RING | Gasket for screw plug sealing |
