Overview
The ZF 4657.171.029 CLUTCH is a critical torque-transfer component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part sits within the planetary gear set assembly, where it engages and disengages power flow between the input shaft and the intermediate shaft. As a friction-based coupling device, the 4657.171.029 clutch pack ensures smooth gear shifts and reliable power delivery under heavy industrial loads. The SKU 4657.171.029 is manufactured to ZF’s original specifications, guaranteeing exact fitment and durability in demanding applications such as construction vehicles, mining equipment, and heavy-duty trucks. When installed alongside the 4657101042: TRANSMISSION HOUSING and the 4657201028: HOUS.FRONT SECT, this clutch forms the core of the transmission’s hydraulic control circuit.
Symptoms of Failure
When the ZF 4657.171.029 clutch begins to wear, operators will notice several distinct performance issues. Delayed or harsh gear engagement is the most common symptom, often described as a “clunk” when shifting from neutral to drive. Transmission fluid overheating occurs as the clutch slips under load, generating excessive friction heat. Intermittent loss of power during acceleration—especially under heavy torque—indicates worn friction plates. Finally, visible metal particles in the oil pan signal advanced clutch degradation, requiring immediate replacement of the 4657.171.029 unit and inspection of the 4657201013: HOUSING REAR PART for debris damage.
Technical Specifications
| Part Number | 4657.171.029 |
| Type | Multi-disc wet clutch |
| Outer Diameter | 210 mm |
| Inner Diameter | 140 mm |
| Friction Plate Count | 5 |
| Material | Sintered bronze on steel core |
| Weight | 1.8 kg |
| OEM Reference | 4657.171.029 (ZF genuine) |
| Torque Capacity | 1,200 Nm |
| Operating Pressure | 12-16 bar |
Compatibility
This clutch is designed for ZF WG 190 and WG 210 series transmissions. It also fits select WG 180 and WG 200 variants where the clutch pack diameter matches 210 mm. The 4657.171.029 is not compatible with older WG 160 or WG 170 models. For proper installation, ensure the 0631306792: CYLINDRICAL PIN is correctly aligned to prevent misalignment of the clutch hub. Always verify your transmission’s serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101042 | TRANSMISSION HOUSING | Encloses gear train and clutch assembly |
| 4657201028 | HOUS.FRONT SECT | Front section housing input shaft bearings |
| 4657201013 | HOUSING REAR PART | Rear section supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for clutch hub positioning |
| 0636100801 | CAP SCREW | Fastener for clutch pack retention |
| 4656301148 | FIXING PLATE | Secures clutch piston in housing |
| 4657301034 | SCREEN SHEET | Oil filter screen for clutch lubrication |
| 4657301035 | SCREEN SHEET | Secondary oil filter screen |
| 0636100803 | CAP SCREW | Bolt for housing flange connection |
| 4656301048 | OIL FEED.HOUSG. | Distributes hydraulic fluid to clutch |
