Overview
The ZF 4657.374.039 SHAFT is a precision-machined internal component engineered for the WG190 series and related heavy-duty transmission platforms. This genuine OEM part serves as the primary torque-transfer element within the gear train, ensuring smooth power delivery from the input to the output assembly. The SKU 4657.374.039 is specifically designed to interface with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, forming a critical link in the driveline. When paired with the HOUSING REAR PART, this shaft maintains precise alignment under high-load conditions. The 4657.374.039 is manufactured to ZF’s original tolerances, making it a direct replacement for worn units in BP 210, WG 190, WG 210, and WG 230 series transmissions.
Symptoms of Failure
- Transmission gear slipping under load: A worn 4657.374.039 shaft can cause intermittent gear disengagement, particularly during acceleration or hill climbs. This is a common long-tail search query for “ZF WG190 gear slipping repair.”
- Oil leaks near the front housing seal: Excessive play in the shaft can damage the seal interface, leading to fluid seepage around the CYLINDRICAL PIN mounting area. Search terms like “ZF transmission oil leak front housing” often point to this failure.
- Abnormal whining or grinding noise: As the shaft surface wears, it generates metallic debris and audible noise, especially in neutral or low gear. This symptom is frequently searched as “ZF WG210 grinding noise when driving.”
- Vibration in the driveline: A bent or fatigued shaft creates harmonic vibrations that worsen with speed, indicating imminent failure of the 4657.374.039.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.374.039 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 385 mm |
| Shaft Diameter (bearing journal) | 45 mm |
| Spline Count | 24 involute splines |
| Weight | 3.2 kg |
| OEM Reference | ZF 4657.374.039 |
| Hardness | 58-62 HRC (case depth 0.8 mm) |
Compatibility
This genuine ZF shaft is engineered for the following transmission models: WG180, WG190, WG200, WG210, WG230, as well as the BP 210 series. It is a direct fit for all variants within these families, including those with integrated retarders. The 4657.374.039 is not compatible with older ZF Ecomat or AS Tronic series without adapter modifications. For proper installation, always replace the CAP SCREW and FIXING PLATE simultaneously to maintain torque specs.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Encloses the gear train and supports shaft bearings |
| 4657201027 | HOUS.FRONT SECT | Front section housing that aligns the input shaft |
| 4657201012 | HOUSING REAR PART | Rear housing section supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Locating pin for precise housing alignment |
| 0636100801 | CAP SCREW | Fastener for securing bearing caps |
| 4656301148 | FIXING PLATE | Locks shaft axial position |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for debris protection |
| 0636100803 | CAP SCREW | High-tensile bolt for housing joints |
| 4681301040 | OIL FEED.HOUSG. | Distributes lubricant to shaft bearings |
Frequently Asked Questions
Q: Can the 4657.374.039 shaft be reused after a transmission rebuild?
A: No. ZF recommends replacing this shaft with a new genuine part (4657.374.039) during any major overhaul due to micro-fractures that develop over time. Reusing it risks premature failure and damage to the TRANSMISSION HOUSING.
Q: What is the typical lifespan of this shaft in a WG190?
A: Under normal operating conditions (highway use, proper lubrication), the 4657.374.039 lasts approximately 500,000 to 700,000 km. Heavy off-road or high-torque applications may reduce this to 300,000 km.
Q: Do I need to replace the CYLINDRICAL PIN when installing this shaft?
A: Yes. The CYLINDRICAL PIN (0631306792) should always be replaced to ensure correct housing alignment and prevent oil leaks at the front section.
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ZF 4657.374.039 SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4657.374.039 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 4657.374.039 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: 4657024024
- Documentation reference: 4657024026
- Illustration section: COUPLING
Cross Reference Support
- Cross-reference record available for RFQ review.
Specification Snapshot
| ZF part number | 4657.374.039 |
|---|---|
| Normalized SKU | 4657374039 |
| 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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