Overview
The ZF 4657.303.010 SHAFT is a precision-machined internal component engineered specifically for the WG 210 series transmission. This genuine OEM part serves as the primary torque-transfer element within the planetary gearset, connecting the clutch pack to the output hub. Designed to withstand high cyclic loads and thermal expansion, the shaft ensures consistent power delivery under heavy-duty industrial applications. The SKU 4657.303.010 is manufactured to ZF’s original metallurgical specifications, guaranteeing exact fitment and durability. When installed alongside the 4657101040: TRANSMISSION HOUSING, this shaft maintains proper alignment and reduces internal friction.
Symptoms of Failure
- Delayed gear engagement or slipping — A worn 4657.303.010 shaft can cause hesitation when shifting from neutral to drive, particularly under load, as the splines lose their interference fit.
- Metallic grinding noise from the bell housing — If the shaft bearing journal wears unevenly, operators may hear a low-frequency grinding sound during acceleration, indicating imminent spline failure.
- Transmission fluid contamination with metal particles — Flaking or pitting on the shaft surface introduces ferrous debris into the oil circuit, often detected during routine filter inspections.
- Intermittent loss of forward or reverse torque — A cracked or fatigued shaft can cause sudden power loss without warning, mimicking a clutch pack failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Overall Length | 245 mm |
| Shaft Diameter (Spline) | 32 mm |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 1.85 kg |
| OEM Reference | ZF 4657.303.010 |
| Surface Finish | Ground & phosphate-coated |
| Torque Capacity | 850 Nm (peak) |
Compatibility
This shaft is a direct replacement for the following ZF transmission models: WG180, WG200, WG210, and WG250 series. It is also compatible with select ZF-Ecomat variants using the same planetary carrier design. For proper installation, the shaft must be paired with the 4657201028: HOUS.FRONT SECT and the 4657201013: HOUSING REAR PART to maintain correct axial clearance. Always verify the spline count and pilot bore diameter against your existing assembly before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101040 | TRANSMISSION HOUSING | Main structural casing that encloses the gearset |
| 4657201028 | HOUS.FRONT SECT | Front section housing the input shaft bearing |
| 4657201013 | HOUSING REAR PART | Rear section supporting the output shaft assembly |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing-to-shaft positioning |
| 0636100801 | CAP SCREW | M10 fastener for securing the shaft retaining plate |
| 4656301148 | FIXING PLATE | Locking plate that prevents shaft axial movement |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil return passage |
| 4657301049 | SCREEN SHEET | Coarse mesh pre-filter for sump protection |
| 0636100803 | CAP SCREW | M8 bolt for screen sheet retention |
| 4681301040 | OIL FEED.HOUSG. | Lubrication distribution manifold for shaft bearings |
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