Overview
This OEM genuine ZF 4657.304.028 OUTPUT SHAFT is a critical rotating component engineered for the WG190 and WG210 series transmissions. It transfers torque from the planetary gear set to the driveline flange, ensuring smooth power delivery under heavy loads. Positioned at the rear of the main housing assembly, this shaft interfaces directly with the HOUSING REAR PART and is secured by precision CYLINDRICAL PIN alignment. The SKU 4657.304.028 is factory-machined to exact ZF tolerances, making it a direct replacement for worn units in commercial vehicle transmissions.
Symptoms of Failure
- Oil seepage at the rear seal area – A worn output shaft bearing journal or spline wear can compromise the seal lip, causing transmission fluid to leak onto the bell housing.
- Driveline vibration under load – When the shaft’s splines or bearing surfaces become pitted or scored, it creates imbalance that translates into low-frequency shudder during acceleration.
- Intermittent gear engagement noise – Excessive axial play in the output shaft allows the planetary carrier to shift, producing a metallic clatter when shifting between forward and reverse.
- Reduced power transfer efficiency – Worn splines on the shaft cannot fully engage the mating hub, leading to torque loss and increased fuel consumption.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.304.028 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 312 mm (estimated) |
| Spline Diameter | 48 mm (major diameter) |
| Weight | 4.2 kg (9.3 lbs) |
| OEM Reference | ZF 4657.304.028 |
| Surface Hardness | 58–62 HRC |
Compatibility
This output shaft is designed for the ZF WG190 and WG210 transmission families. It also fits select variants of the WG180 and WG200 series where the rear housing interface matches. The shaft works in conjunction with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain concentric alignment. Always verify your transmission serial number against the ZF parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Encloses the gear train and supports shaft bearings |
| 4657201028 | HOUS.FRONT SECT | Front section of the main housing, aligns input shaft |
| 4657201013 | HOUSING REAR PART | Rear housing that supports the output shaft bearing |
| 0631306792 | CYLINDRICAL PIN | Precision alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastens housing sections together |
| 4656301148 | FIXING PLATE | Secures output shaft bearing in position |
| 4657301034 | SCREEN SHEET | Filter screen for transmission oil circuit |
| 4657301035 | SCREEN SHEET | Secondary filter screen for hydraulic system |
| 0636100803 | CAP SCREW | Mounting bolt for rear housing cover |
| 4681301040 | OIL FEED.HOUSG. | Distributes lubricating oil to shaft bearings |
Frequently Asked Questions
Q: Can this output shaft be used in a ZF WG200 transmission?
A: Yes, the 4657.304.028 is compatible with WG200 series transmissions that share the same rear housing interface as the WG190/WG210. Always cross-reference your transmission model code with the OEM parts list.
Q: What torque specification should I use when installing this shaft?
A: The output shaft retaining nut should be torqued to 250–280 Nm (184–207 lb-ft) using a thread-locking compound. Refer to the ZF service manual for your specific transmission variant.
Q: How do I know if the splines on my old shaft are worn?
A: Inspect the spline flanks for a polished or “peened” appearance. If you can rock the mating hub more than 0.5 mm radially, the shaft requires replacement to prevent driveline failure.
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ZF 4657.304.028 OUTPUT SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4657.304.028 OUTPUT 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 4657.304.028 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657023001
- Documentation reference: 4657023004
- Documentation reference: 4657023100
- Documentation reference: 4657024145
- Illustration section: DIFFERENTIAL
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 | 4657.304.028 |
|---|---|
| Normalized SKU | 4657304028 |
| Part name | OUTPUT 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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