Overview
The ZF 4681.373.002 SHAFT is a precision-machined component engineered specifically for the BP210 and BP230 series transmissions. This genuine OEM part serves as the primary torque-transfer element within the gear train, connecting the input drive to the planetary gear sets. Located centrally within the main transmission assembly, the shaft (SKU: 4681.373.002) ensures rotational stability and power delivery under heavy industrial loads. It interfaces directly with the 4681101002: TRANSMISSION HOUSING and the 4681201007: HOUS.FRONT SECT, forming a critical structural link in the driveline.
Symptoms of Failure
When the 4681.373.002 shaft begins to degrade, operators often notice distinct operational issues. Common failure indicators include:
- Gear Slipping Under Load: Worn splines or surface fatigue on the shaft cause intermittent disengagement, particularly during acceleration or uphill travel.
- Vibration and Driveline Chatter: A failing shaft introduces rotational imbalance, leading to noticeable vibration at specific RPM ranges.
- Metallic Debris in Transmission Fluid: As the shaft surface wears, fine metal particles contaminate the oil, often visible during routine fluid changes.
- Oil Leaks at the Front Housing Seal: Shaft runout or bearing surface wear can compromise the seal interface, causing fluid seepage near the 4681201008: HOUSING REAR PART junction.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4681.373.002 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 312 mm (estimated) |
| Diameter (Spline Major) | 38 mm |
| Weight | 2.85 kg (approx.) |
| OEM Reference | ZF 4681.373.002 |
| Surface Treatment | Black oxide / phosphate coating |
Compatibility
This genuine ZF shaft is designed for the BP210 and BP230 transmission series. Based on its spline geometry and length, it is also compatible with the WG180, WG200, and WG210 models used in medium-duty construction and material handling equipment. The shaft works in conjunction with the 4681298001: CASE assembly to ensure proper gear alignment and load distribution.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4681101002 | TRANSMISSION HOUSING | Encloses and supports all internal gear components |
| 4681201007 | HOUS.FRONT SECT | Front section housing for input shaft and bearing support |
| 4681201008 | HOUSING REAR PART | Rear section housing for output shaft and seal interface |
| 4681298001 | CASE | Main structural casing for gear train assembly |
| 0631306074 | CYLINDRICAL PIN | Alignment pin for precise housing positioning |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4681301015 | FIXING PLATE | Retaining plate for shaft bearing preload |
| 4681301016 | SCREEN SHEET | Filter screen for oil sump debris protection |
| 4681301017 | SCREEN SHEET | Secondary filter screen for hydraulic circuit |
| 0636100803 | CAP SCREW | High-tensile fastener for bearing cap retention |
Frequently Asked Questions
Q: Can the 4681.373.002 shaft be replaced without removing the entire transmission?
A: In most BP210/BP230 applications, the shaft can be accessed by removing the front housing section and the HOUS.FRONT SECT. However, full transmission removal is recommended for thorough inspection of related bearings and seals.
Q: What causes premature wear on this shaft?
A: Common causes include contaminated transmission fluid, improper torque on the CAP SCREW fasteners, or misalignment of the CASE assembly during previous repairs.
Q: Is this shaft interchangeable between BP210 and BP230 models?
A: Yes, the 4681.373.002 is a shared component across both series. Always verify spline count and length against your existing part before installation.
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ZF 4681.373.002 SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4681.373.002 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 4681.373.002 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4681054011
- Documentation reference: 4681054012
- Documentation reference: 4681054013
- Documentation reference: 4681054018
- Illustration section: COUPLING
Cross Reference Support
- Cross-reference record available for RFQ review.
Specification Snapshot
| ZF part number | 4681.373.002 |
|---|---|
| Normalized SKU | 4681373002 |
| Part name | SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: real photo. 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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