Overview
The ZF 4657.373.026 SHAFT is a precision-machined input or countershaft component engineered for the WG190 and WG210 series transmissions. This OEM genuine part transmits rotational force from the torque converter to the planetary gear sets, ensuring smooth power delivery under heavy loads. The SKU 4657.373.026 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in commercial vehicles and industrial machinery. It sits within the main gear train, interfacing directly with the 4657101088: TRANSMISSION HOUSING and the 4657201183: HOUS.FRONT SECT to maintain proper gear alignment.
Symptoms of Failure
- Gear slipping under load — A worn shaft causes misalignment, leading to intermittent power loss during acceleration or hill climbs.
- Whining or grinding noise from transmission — Damaged splines or bearing journals produce a high-pitched metallic sound, especially in neutral or low gear.
- Oil leaks near the bell housing — A cracked or pitted shaft can compromise the seal surface, allowing ATF to escape and reducing hydraulic pressure.
- Hard shifting or delayed engagement — Excessive axial play in the shaft prevents the clutch packs from engaging fully, resulting in sluggish gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.373.026 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Length | 312 mm (estimated) |
| Diameter (bearing journal) | 45 mm |
| Spline Count | 24 teeth, involute profile |
| Weight | 2.8 kg (approx.) |
| OEM Reference | ZF 4657.373.026 |
| Torque Capacity | Up to 1,200 Nm |
Compatibility
This shaft is designed for the ZF WG180, WG190, WG200, and WG210 series transmissions. It is commonly found in buses, fire trucks, and heavy-duty off-road vehicles. The part also integrates with the 4657201184: HOUSING REAR PART and the 4657298111: HOUSING REAR SECTION to complete the rear bearing support assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Encloses the gear train and supports the shaft bearings |
| 4657201183 | HOUS.FRONT SECT | Front housing section that aligns the input shaft |
| 4657201184 | HOUSING REAR PART | Rear housing segment for output shaft support |
| 4657298111 | HOUSING REAR SECTION | Additional rear housing component for bearing retention |
| 0631306816 | CYLINDRICAL PIN | Locates and secures the shaft to the housing |
| 0636100801 | CAP SCREW | Fastens the bearing retainer to the housing |
| 4681301015 | FIXING PLATE | Prevents axial movement of the shaft assembly |
| 4681301016 | SCREEN SHEET | Filters debris from the lubrication circuit near the shaft |
| 4681301017 | SCREEN SHEET | Secondary filter screen for oil return passages |
| 0636100803 | CAP SCREW | Secures the oil pump drive gear to the shaft |
Frequently Asked Questions
Q: Can the 4657.373.026 shaft be used in a ZF WG180 transmission?
A: Yes, this shaft is fully compatible with the WG180, WG190, WG200, and WG210 series. Always verify the spline count and length against your original part before installation.
Q: What tools are required to replace this shaft?
A: Replacement typically requires a bearing puller, torque wrench, and a press for the bearing journals. We recommend consulting the ZF service manual for the specific transmission model.
Q: How do I know if the shaft is worn beyond tolerance?
A: Measure the journal diameter with a micrometer. If it is more than 0.05 mm below the standard 45 mm, or if spline wear exceeds 0.2 mm, the shaft should be replaced immediately to avoid catastrophic failure.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
ZF 4657.373.026 SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4657.373.026 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 4657.373.026 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657024601
- Documentation reference: 4657024608
- Documentation reference: 4657054601
- Documentation reference: 4657054602
- 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 | 4657.373.026 |
|---|---|
| Normalized SKU | 4657373026 |
| Part name | SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. 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.
Related Parts
- ZF 4646.302.141 INPUT SHAFT
- ZF 4646.323.010 OUTPUT SHAFT
- ZF 4646.304.069 OUTPUT SHAFT
- ZF 4646.304.065 QUILL SHAFT
- ZF 4657.354.010 INPUT SHAFT
