Overview
The ZF 4657.055.312 5 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-matched assembly designed for heavy-duty off-highway applications. This complete unit serves as the central power distribution hub within the WG 210 series, managing torque flow across five forward speeds. The SKU 4657.055.312 represents a direct replacement for worn or failed assemblies, ensuring seamless integration with existing drivelines. It sits between the engine flywheel housing and the final drive, incorporating the main shaft, clutch packs, and valve body. For a full rebuild, the TRANSMISSION HOUSING provides the structural foundation, while the HOUS.FRONT SECT and HOUSING REAR PART enclose the rotating components.
Symptoms of Failure
When the ZF 4657.055.312 assembly begins to degrade, operators will notice distinct performance issues. Common failure symptoms include:
- Delayed engagement or gear slipping – The transmission hesitates before moving or loses power under load, often due to worn clutch discs or degraded seals inside the unit.
- External oil leaks near the bell housing – Fluid seepage from the main shaft seal or housing gaskets indicates internal pressure loss or seal fatigue.
- Erratic shifting or harsh engagement – Sudden, jarring gear changes suggest valve body wear or contamination within the hydraulic circuit.
- Overheating during normal operation – Excessive heat buildup, often accompanied by burnt oil smell, points to internal friction or blocked cooling passages.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.055.312 |
| Assembly Type | Complete Powershift Unit (5-speed) |
| OEM Reference | ZF WG 210 Series |
| Estimated Weight | 185 kg (408 lbs) |
| Housing Material | High-strength cast iron |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Related Fastener | CAP SCREW (0636100801) |
| Related Fastener | CAP SCREW (0636100803) |
Compatibility
This complete unit is engineered for the ZF WG 210 series, but it also fits select models in the WG 180 and WG 200 families due to shared mounting patterns and shaft dimensions. It is commonly used in ZF WG180, WG200, and WG210 transmissions found in telehandlers, wheel loaders, and industrial tractors. For precise fitment, verify the bell housing interface; the HOUSING REAR SECTION may require matching to your specific chassis configuration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201161 | HOUS.FRONT SECT | Front section enclosing input shaft |
| 4657201162 | HOUSING REAR PART | Rear section supporting output bearings |
| 4657298107 | HOUSING REAR SECTION | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | M10 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Retains clutch pack assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M12 fastener for rear housing |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
