Overview
The ZF 4657.171.054 COUPLING is a critical driveline component engineered specifically for the WG 190, WG 210, and WG 230 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 industrial loads. The coupling absorbs torsional vibrations and compensates for minor misalignment, protecting downstream components from premature wear. When replacing this unit, always verify the SKU 4657.171.054 matches your transmission’s original equipment specifications to maintain factory tolerances. This coupling works in concert with the TRANSMISSION HOUSING to maintain structural integrity during high-torque operations.
Symptoms of Failure
- Transmission oil leaks at the bell housing interface – Worn coupling seals allow hydraulic fluid to escape, leaving visible puddles under the vehicle after shutdown.
- Gear slipping under load – A degraded coupling loses its clamping force, causing intermittent power loss during acceleration or hill climbs.
- Metallic rattling or clunking from the transmission front – Excessive play in the coupling hub produces audible noise, especially when shifting between forward and reverse.
- Vibration through the chassis at highway speeds – Imbalanced coupling elements transmit harmonic oscillations into the driveline, felt as a persistent shudder in the cab.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.171.054 |
| Outer Diameter | 210 mm (estimated) |
| Inner Diameter (Spline) | 45 mm (estimated) |
| Overall Length | 85 mm (estimated) |
| Material | High-strength alloy steel with nitrided surface |
| Weight | 2.4 kg (5.3 lbs) |
| OEM Reference | ZF 4657.171.054 |
| Torque Capacity | 1,200 Nm (estimated) |
Compatibility
This coupling is designed for the ZF WG 190, WG 210, and WG 230 series transmissions. It is also compatible with the WG 180 and WG 200 models when used with the appropriate HOUS.FRONT SECT adapter. For WG 250 and WG 300 series applications, verify clearance with the HOUSING REAR PART before installation. The coupling also interfaces directly with the HOUSING REAR SECTION in certain WG 210 configurations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Encloses and supports all internal transmission components |
| 4657201161 | HOUS.FRONT SECT | Front section of the transmission housing, aligns with the coupling |
| 4657201162 | HOUSING REAR PART | Rear housing section providing structural support |
| 4657298107 | HOUSING REAR SECTION | Alternate rear housing variant for specific WG models |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing-to-coupling positioning |
| 0636100801 | CAP SCREW | Fastener securing the coupling to the flywheel |
| 4656301148 | FIXING PLATE | Retains the coupling in its axial position |
| 4657301032 | SCREEN SHEET | Debris filter protecting the coupling from contamination |
| 4657301033 | SCREEN SHEET | Secondary filter for enhanced fluid cleanliness |
| 0636100803 | CAP SCREW | Mounting bolt for the fixing plate assembly |
Frequently Asked Questions
Q: Can I install the 4657.171.054 coupling without replacing the housing components?
A: Yes, but we recommend inspecting the TRANSMISSION HOUSING for cracks or wear. A damaged housing can cause premature coupling failure.
Q: What is the expected service life of this coupling under normal conditions?
A: With proper lubrication and alignment, the OEM coupling typically lasts 150,000–200,000 km in on-highway applications. Off-road use may reduce this interval.
Q: Does this part require any special tools for installation?
A> A standard torque wrench and a puller tool are recommended. The CYLINDRICAL PIN must be aligned precisely to avoid binding.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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