Overview
The ZF 4657.176.037 COUPLING is a critical driveline component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part serves as the primary torque-transfer interface between the engine output and the transmission input shaft, ensuring smooth power delivery under heavy-duty operating conditions. Positioned within the bell housing assembly, this coupling absorbs torsional vibrations and compensates for minor misalignment, protecting downstream gear sets from shock loads. The SKU 4657.176.037 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in commercial vehicles, construction equipment, and marine applications.
Symptoms of Failure
When the ZF 4657.176.037 COUPLING begins to wear, operators may notice several distinct failure indicators. 1. Driveline shudder during acceleration — a pronounced vibration felt through the chassis when taking off from a stop, often misdiagnosed as a torque converter issue. 2. Metallic clicking or clunking noises from the bell housing area, particularly during gear changes or when toggling between forward and reverse. 3. Fluid contamination — as the coupling degrades, rubber or composite particles may enter the transmission fluid, visible as dark specks on the dipstick. 4. Intermittent power loss under load, where the engine revs but vehicle speed does not increase proportionally, indicating the coupling is slipping internally.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.176.037 |
| OEM Reference | ZF 4657.176.037 |
| Material | High-tensile steel hub with elastomeric damping element |
| Outer Diameter | 210 mm (estimated) |
| Inner Diameter | 65 mm (estimated) |
| Overall Length | 95 mm (estimated) |
| Weight | 4.2 kg (estimated) |
| Torque Capacity | 1,200 Nm (estimated) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This ZF 4657.176.037 COUPLING is designed for use in the WG 210 Series transmission family, with confirmed fitment in the WG 190 and WG 210 models. It is also compatible with earlier WG 180 and WG 200 variants where the bell housing configuration matches. Always verify your transmission’s serial number against ZF’s application guide before installation. The coupling works in concert with the 4657101085 TRANSMISSION HOUSING, which encloses the entire gear train. For complete assembly, pair it with the 4657201161 HOUS.FRONT SECT and the 4657201162 HOUSING REAR PART. In certain configurations, the 4657298107 HOUSING REAR SECTION is also required to complete the rear enclosure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201161 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201162 | HOUSING REAR PART | Rear portion of the transmission housing |
| 4657298107 | HOUSING REAR SECTION | Alternate rear housing section variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retaining plate for coupling positioning |
| 4657301032 | SCREEN SHEET | Filter screen for fluid debris protection |
| 4657301033 | SCREEN SHEET | Secondary filter screen variant |
| 0636100803 | CAP SCREW | Additional housing fastener |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
