Overview
The ZF 4657.373.022 SHAFT is a critical rotating component engineered specifically for the WG190, WG210, and WG230 series transmissions. This OEM genuine part transmits torque between gear sets within the main drive assembly, ensuring precise power flow and smooth gear engagement. The SKU 4657.373.022 serves as a direct replacement for worn shafts, restoring factory-specified clearances and load capacity. It integrates directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain concentric alignment under heavy loads.
Symptoms of Failure
- Transmission gear slipping under load: A worn shaft can cause misalignment, leading to intermittent gear disengagement during acceleration.
- Low-frequency vibration or whining noise: Bearing surface wear on the shaft produces audible harmonics that intensify with road speed.
- Metallic debris in transmission fluid: Flaking or pitting on the shaft surface contaminates the oil, often visible during routine drain intervals.
- Oil seepage near the rear housing joint: Shaft wear can distort the seal surface, causing fluid to escape past the HOUSING REAR PART interface.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.373.022 |
| OEM Reference | ZF 4657.373.022 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | ~245 mm |
| Major Diameter | ~42 mm |
| Spline Count | 24 involute splines |
| Weight | ~1.8 kg |
| Surface Treatment | Black oxide + phosphate coating |
Compatibility
This shaft is validated for the following ZF transmission models: WG180, WG190, WG200, WG210, WG230. It is also compatible with select off-highway variants using the same spline geometry. When replacing the shaft, always inspect the CYLINDRICAL PIN for wear, as it locates the shaft within the housing assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Encloses gear sets and supports shaft bearings |
| 4657201027 | HOUS.FRONT SECT | Front section housing for input shaft alignment |
| 4657201012 | HOUSING REAR PART | Rear housing section with seal bore |
| 0631306792 | CYLINDRICAL PIN | Locates shaft within housing bore |
| 0636100801 | CAP SCREW | Secures bearing retainer to housing |
| 4656301148 | FIXING PLATE | Prevents axial movement of shaft assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | Fastener for rear housing flange |
| 4681301040 | OIL FEED.HOUSG. | Directs pressurized oil to shaft lubrication galleries |
Frequently Asked Questions
Q: How do I confirm the 4657.373.022 shaft is compatible with my WG210 transmission?
A: Verify the transmission serial number against the OEM parts catalog. This shaft is a direct fit for all WG190, WG210, and WG230 models with 24-spline output configurations. Always replace the CYLINDRICAL PIN simultaneously to maintain alignment tolerances.
Q: What torque specification applies to the shaft retaining nut?
A: The main shaft nut should be tightened to 280–320 N·m using a calibrated torque wrench. Apply thread-locking compound (Loctite 243) to the threads before final assembly. Refer to the ZF service manual for your specific model variant.
Q: Can I reuse the old HOUSING REAR PART when installing this shaft?
A: Yes, provided the rear housing bore is within factory wear limits (max 0.05 mm ovality). Inspect the seal surface for scoring. If any damage is present, replace the housing to prevent premature shaft seal failure.
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ZF 4657.373.022 SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4657.373.022 SHAFT with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This shaft page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 4657.373.022 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657024016
- Documentation reference: 4657024018
- Documentation reference: 4657024022
- Documentation reference: 4657024024
- Illustration section: COUPLING
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4657.373.022 |
|---|---|
| Normalized SKU | 4657373022 |
| Part name | SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: diagram. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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