Overview
The ZF 4657.058.001 8 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway applications. This fully assembled transmission integrates all internal rotating components, valve bodies, and clutch packs into a single ready-to-install package. As the core power transfer module in the WG 210 series, it replaces the need for piecemeal rebuilding by providing a drop-in solution. The SKU 4657.058.001 is specifically configured for 8-speed forward operation, making it ideal for loaders, graders, and material handlers requiring precise shift modulation under high torque loads. This assembly interfaces directly with the TRANSMISSION HOUSING and mates to the HOUS.FRONT SECT to form the complete driveline envelope.
Symptoms of Failure
When the ZF 4657.058.001 assembly begins to degrade, operators typically notice three distinct failure modes. First, delayed engagement or gear slipping under load occurs as internal clutch pack clearances exceed tolerances, often accompanied by a distinct shudder during direction changes. Second, external oil leaks at the main case joint develop when the housing sealing surfaces fatigue, frequently visible as drips near the bell housing interface. Third, erratic shift timing or harsh upshifts indicate wear in the hydraulic control valves, which can cause the transmission to hunt between gears at partial throttle. Fourth, metallic debris in the oil filter or magnetic drain plug signals advanced wear of planetary gear sets or bearing races, requiring immediate replacement of the complete assembly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Assembly Weight | Approx. 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| OEM Reference | ZF 4657.058.001 |
| Speed Configuration | 8 forward / 4 reverse |
| Max Input Torque | 2,100 Nm |
| Fluid Capacity | 28 liters (ZF TE-ML 03C/D) |
Compatibility
This complete unit is engineered for the ZF WG 210 series powershift transmission family. It is directly compatible with WG 210 models produced after 2012, including the WG 210-8, WG 210-6, and WG 210-4 variants. The assembly also shares mounting interfaces with earlier WG 180 and WG 200 series housings, though internal clutch ratios differ. For proper installation, the unit must be paired with the HOUSING REAR PART and the HOUSING REAR SECTION to complete the torque converter cavity. This assembly is not backward-compatible with WG 160 or WG 120 series without significant adapter modifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201170 | HOUSING REAR PART | Rear housing for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO adapter |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M12 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Retaining plate for clutch piston |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M14 fastener for rear housing |
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