Overview
The ZF 4657.055.108 5 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This assembly integrates the gear cluster, clutch packs, and hydraulic control elements into a single, ready-to-install package. As the core power transfer module in the WG 210 series, it converts engine torque into controlled, multi-speed output for loaders, graders, and industrial vehicles. The SKU 4657.055.108 represents a fully assembled transmission, eliminating the need to source individual internal components. This unit sits directly between the engine bellhousing and the final drive, with the 4657101082: TRANSMISSION HOUSING providing the structural envelope for the entire assembly.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the internal clutch packs or hydraulic seals degrade, the transmission may hesitate or fail to hold gear during heavy excavation or grading operations.
- External oil seepage at housing joints: Worn gaskets or cracks in the 4657201166: HOUS.FRONT SECT can cause ATF fluid to weep, leading to low pressure and eventual transmission failure.
- Metallic grinding or whining noise during shifts: Bearing wear or gear tooth damage inside the assembly produces audible distress, particularly when transitioning between forward and reverse ranges.
- Delayed or no reverse engagement: A failing torque converter or valve body issue within the 5 WG 210 often manifests as a complete loss of reverse function before forward gears are affected.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.055.108 |
| Transmission Series | WG 210 (5-speed Powershift) |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Input Torque Capacity | 2,100 Nm (1,549 lb-ft) |
| Oil Capacity (system) | 28 liters |
| Related Housing Parts | 4657201170: HOUSING REAR PART, 4657298102: HOUSING REAR SECTION |
Compatibility
This complete assembly is engineered specifically for the ZF WG 210 series powershift transmissions. It is directly compatible with WG 210 models used in construction and material handling equipment. While the WG 180 and WG 200 series share similar modular architecture, the 4657.055.108 unit is dimensionally unique to the WG 210. It will not physically interchange with the smaller WG 180 or the earlier WG 200 without significant modification to the HOUS.FRONT SECT and rear mounting points. Always verify the transmission tag on your equipment to confirm WG 210 designation before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assembly |
| 4657201166 | HOUS.FRONT SECT | Front section housing input shaft and pump drive |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output shaft and PTO |
| 4657298102 | HOUSING REAR SECTION | Extended rear section for additional gear reduction |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M12 fastener for housing flange connections |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for oil sump |
| 0636100803 | CAP SCREW | M10 fastener for valve body mounting |
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