Overview
The ZF 4657.056.173 6 WG 210 Powershift Transmission Assembly | Complete Unit (SKU: 4657.056.173) is a fully assembled, factory-grade replacement for the WG 210 series. This complete unit integrates the main gear cluster, clutch packs, and hydraulic control system into a single, ready-to-install assembly. It sits as the core power transfer module within the transmission, directly coupling the torque converter to the output shaft. When replacing this assembly, it is critical to inspect the 4657101080: TRANSMISSION HOUSING for cracks or wear, as the housing provides the structural foundation for the entire unit. The 4657.056.173 is engineered to restore original shift quality and load capacity in heavy-duty applications.
Symptoms of Failure
- Erratic or delayed gear engagement: When the assembly wears, internal clutch piston seals fail, causing hesitation or harsh shifts under load.
- Torque converter shudder at low RPM: Worn stator support bearings within the assembly produce a distinct vibration during acceleration from a stop.
- Hydraulic fluid contamination: Metal debris from failing planetary gears circulates through the system, often visible as glitter in the oil pan.
- Complete loss of forward or reverse: A seized spool valve or broken clutch hub within the assembly results in a no-drive condition, requiring immediate unit replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.173 |
| Assembly Type | 6-Speed Powershift Complete Unit |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-Grade Aluminum Alloy |
| OEM Reference | ZF 6 WG 210 |
| Torque Capacity | 2100 Nm (max) |
Compatibility
This complete unit is specifically designed for the ZF WG 210 Series powershift transmissions. It is directly compatible with models including the WG180, WG200, and WG210. The assembly also fits select variants of the WG160 when used with the correct 4657201167: HOUS.FRONT SECT and 4657201171: HOUSING REAR PART. For applications requiring a different rear mount configuration, verify compatibility with the 4657298103: HOUSING REAR SECTION. Always confirm your transmission model tag before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201167 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201171 | HOUSING REAR PART | Rear housing segment for output bearing retention |
| 4657298103 | HOUSING REAR SECTION | Alternate rear housing for PTO configurations |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Mounting plate for valve body retention |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for oil sump |
| 0636100803 | CAP SCREW | High-torque bolt for clutch pack assembly |
