Overview
The ZF 4657.056.048 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit engineered for heavy-duty off-highway applications. This fully assembled gearbox integrates the main drive housing, clutch packs, and hydraulic control components into a single drop-in solution. As the core of the WG 210 series, it manages torque distribution across six forward speeds, ensuring smooth power delivery under extreme loads. The SKU 4657.056.048 designates a complete assembly, meaning it replaces the entire internal rotating group and valve body. For a full rebuild, this unit is typically mounted onto a 4657101034: TRANSMISSION HOUSING and sealed with a 4657201027: HOUS.FRONT SECT to form the primary structural shell.
Symptoms of Failure
- Delayed engagement or gear slipping under load: Worn clutch discs or piston seals inside the 4657.056.048 cause hesitation when shifting from neutral to drive, especially on inclines.
- External oil leaks near the rear bell housing: Cracks in the 4657201012: HOUSING REAR PART or degraded gaskets allow ATF to weep, leaving puddles under the vehicle.
- Erratic shift timing or harsh upshifts: Contaminated valve body passages or a failing torque converter lock-up clutch produce jarring gear changes and RPM flare.
- Metallic grinding noise during operation: Bearing failure or gear tooth spalling inside the assembly generates a distinct whine that worsens with speed.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.056.048 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Overall Length | 620 mm (24.4 in) |
| Dry Weight | 185 kg (408 lb) |
| Housing Material | High-strength cast iron (GGG-40) |
| Max Input Torque | 2,100 Nm (1,549 lb-ft) |
| Clutch Disc Count | 12 (6 forward, 6 reverse) |
| OEM Reference | ZF 6 WG 210 Series |
Compatibility
This complete unit is specifically designed for the ZF WG 210 transmission series. It is directly interchangeable with models in the WG180, WG200, and WG210 families that share the same bell housing bolt pattern and input shaft spline count. The assembly also fits select variants of the WG 150 and WG 250 when used with the appropriate 0631306792: CYLINDRICAL PIN for alignment. Always verify the serial number against your existing transmission tag before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101034 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section supporting input shaft |
| 4657201012 | HOUSING REAR PART | Rear cover with PTO mounting points |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | M12 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Locks clutch piston in place |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M10 fastener for valve body |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil distribution manifold |
