Overview
The ZF 4651.152.011 COUPLING is a critical driveline component engineered specifically for the WG 100 and WG 110 transmission series. 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. Located within the bell housing assembly, the coupling absorbs torsional vibrations and compensates for minor misalignment during operation. The SKU 4651.152.011 is manufactured to ZF’s exacting tolerances, guaranteeing a direct replacement fit without modification. When paired with a properly sealed 4651101007: TRANSMISSION HOUSING, this coupling maintains the structural integrity of the entire gear train under heavy industrial loads.
Symptoms of Failure
- Audible clunking or knocking during gear engagement – Worn coupling splines create excessive backlash, producing metallic impact sounds when shifting from neutral to drive or reverse.
- Transmission fluid seepage near the bell housing – A degraded coupling can distort the mating surface, compromising the seal of the adjacent 0634303928: O-RING and allowing oil to escape.
- Vibration at low RPM under load – As the coupling’s elastomeric dampening element fatigues, harmonic vibrations transfer directly into the cab or chassis during start-up and crawling speeds.
- Intermittent power loss or hesitation – Slippage within the coupling hub prevents full torque delivery, often misdiagnosed as clutch or pump failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4651.152.011 |
| Outer Diameter | 152 mm |
| Inner Spline Diameter | 45 mm |
| Overall Length | 98 mm |
| Material | Hardened alloy steel with nitrile dampening insert |
| Weight | 2.4 kg |
| OEM Reference | ZF 4651.152.011 |
| Torque Capacity | 1,200 Nm (estimated) |
Compatibility
This coupling is designed for the ZF WG 100 and WG 110 series transmissions, commonly found in medium-duty trucks, buses, and off-highway equipment. It also fits select variants of the WG 180 and WG 200 models when used with the correct 4651301029: HOUSING adapter. For applications requiring a different bell housing configuration, the 4651301024: HOUSING may be necessary to achieve proper alignment. Always verify the spline count and pilot bore diameter against your transmission’s serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Encloses and supports the gear train assembly |
| 4651301029 | HOUSING | Adapter housing for coupling mounting |
| 0634303928 | O-RING | Seals the coupling-to-housing interface |
| 4651301024 | HOUSING | Alternate housing for WG 180/200 fitment |
| 4651203002 | SCREEN SHEET | Filters debris from transmission fluid |
| 4651303005 | SCREEN SHEET | Secondary filtration screen for oil circuit |
| 0636101032 | CAP SCREW | Fastens housing components together |
| 0630361028 | SEALING CAP | Protects unused ports from contamination |
| 4475280060 | SCREW PLUG | Seals threaded oil passages |
| 0634303312 | O-RING | Provides secondary sealing on plug fittings |
