Overview
The ZF 4657.056.200 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, factory-spec drop-in replacement for heavy-duty off-highway applications. This complete unit integrates the main gear cluster, clutch packs, and hydraulic control system within a single housing. As the core rotating assembly of the WG 210 series, it directly manages torque distribution across all six forward speeds. The SKU 4657.056.200 identifies this as a complete assembly, eliminating the need to piece together individual internal components. When rebuilding a transmission, this unit is typically mounted between the HOUS.FRONT SECT and the HOUSING REAR PART, forming the structural backbone of the drivetrain.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or fatigued seals inside the assembly cause the transmission to hesitate or lose torque when shifting into higher gears.
- Internal hydraulic pressure loss: A failing unit often results in low line pressure, leading to delayed shifts and a noticeable “flare” between gear changes.
- Metallic debris in the oil pan: Bearing or gear wear within the 4657.056.200 generates fine metal particles, visible during routine oil changes.
- Audible whining or grinding noises: Damaged planetary gears or worn thrust washers produce a high-pitched whine that increases with engine RPM.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.200 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Weight (estimated) | 185 kg (408 lbs) |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 6 WG 210 |
| Number of Speeds | 6 forward / 1 reverse |
| Max Input Torque | 2,100 Nm (1,550 lb-ft) |
| Compatible Housing | TRANSMISSION HOUSING (4657101082) |
| Rear Housing Option | HOUSING REAR SECTION (4657298102) |
Compatibility
This complete unit is engineered for the ZF WG 210 series powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG210 variants used in construction loaders, graders, and material handlers. The assembly is also backward-compatible with certain WG 160 series housings when paired with the correct HOUS.FRONT SECT. Always verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing the input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output bearings |
| 4657298102 | HOUSING REAR SECTION | Alternate rear housing for extended configurations |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing flanges |
| 4656301148 | FIXING PLATE | Locks bearing and gear positions |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for oil return |
| 0636100803 | CAP SCREW | High-tensile bolt for clutch pack retention |
