Overview
The ZF 4657.172.037 COUPLING is a critical torque-transfer component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part sits between the engine flywheel and the transmission input shaft, acting as a flexible connector that dampens torsional vibrations while ensuring precise power delivery. The SKU 4657.172.037 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications. When installed alongside the 4657101085: TRANSMISSION HOUSING, this coupling forms the primary load-bearing interface for the entire driveline assembly.
Symptoms of Failure
- Torque fluctuation under load: A worn 4657.172.037 coupling causes noticeable surging or hesitation during acceleration, especially when the transmission is under heavy load in WG 190 series equipment.
- Metallic rattling at idle: Deteriorated coupling elements produce a distinct clattering noise from the bell housing area, often mistaken for flywheel issues.
- Oil seepage from the bell housing: As the coupling wears, it can compromise the seal between the 4657201161: HOUS.FRONT SECT and the engine, leading to visible fluid leaks.
- Vibration during gear engagement: Excessive play in the coupling creates harsh shift feel and driveline shudder, particularly in WG 210 transmissions operating at low RPM.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.172.037 |
| Outer Diameter | 210 mm (estimated) |
| Inner Diameter | 75 mm (estimated) |
| Thickness | 38 mm (estimated) |
| Material | High-tensile steel with elastomeric damping insert |
| Weight | 2.4 kg (estimated) |
| Torque Capacity | 1,200 Nm (estimated) |
| OEM Reference | ZF 4657.172.037 (genuine) |
Compatibility
This coupling is designed for ZF WG 190 and WG 210 series transmissions. It is also compatible with the WG 180, WG 200, and select WG 150 variants when used with the correct 4657201162: HOUSING REAR PART adapter. The part fits all standard industrial and marine applications using these transmission families, including models with the 4657298107: HOUSING REAR SECTION configuration. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201161 | HOUS.FRONT SECT | Forward section of transmission housing |
| 4657201162 | HOUSING REAR PART | Rear housing section for output shaft |
| 4657298107 | HOUSING REAR SECTION | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for coupling retention |
| 4656301148 | FIXING PLATE | Locking plate for coupling bolts |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for oil circuit |
| 0636100803 | CAP SCREW | Secondary fastener for housing |
Frequently Asked Questions
Q: Can the 4657.172.037 coupling be replaced without removing the transmission?
A: In most WG 190 and WG 210 installations, the coupling is accessible after separating the bell housing from the engine. However, full transmission removal is often required to access the 4657201161: HOUS.FRONT SECT bolts.
Q: What is the typical service life of this coupling?
A: Under normal industrial operating conditions, the OEM 4657.172.037 coupling lasts between 3,000 and 5,000 hours. Heavy shock loads or misalignment can reduce this significantly.
Q: Is this part interchangeable with the WG 180 series coupling?
A: While the outer diameter is similar, the WG 180 uses a different spline profile. Always verify compatibility with your specific 4657298107: HOUSING REAR SECTION configuration before purchasing.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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