Overview
This OEM genuine ZF 4681.138.003 FILTER is a critical component engineered specifically for the BP 210 and BP 230 series transmissions. Positioned within the hydraulic control circuit, this filter ensures that transmission fluid remains free of particulate contaminants, protecting precision valves and clutch packs from abrasive wear. The SKU 4681.138.003 directly replaces the original factory-installed element, maintaining the exact flow rate and micron rating required for optimal lubrication and shift quality. When paired with a robust TRANSMISSION HOUSING, this filter forms the first line of defense against internal debris.
Symptoms of Failure
- Erratic or delayed gear engagement: A clogged filter restricts hydraulic pressure, causing hesitation when shifting from Neutral to Drive or Reverse.
- Whining or humming noise from the transmission sump: As the filter becomes blocked, the pump works harder, generating audible cavitation sounds.
- Overheating transmission fluid: Reduced flow through a dirty filter leads to inadequate cooling, often indicated by a burning smell or dashboard warning light.
- Visible metal shavings or sludge in the fluid: When the filter fails to capture debris, contaminants circulate and accelerate wear on internal components.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4681.138.003 |
| OEM Reference | ZF 4681.138.003 |
| Filtration Micron Rating | 25 µm (nominal) |
| Outer Diameter | 95 mm |
| Inner Diameter | 32 mm |
| Height | 145 mm |
| Material | Resin-impregnated cellulose with steel end caps |
| Dry Weight | 0.35 kg |
| Burst Pressure | 12 bar |
Compatibility
This genuine ZF filter is designed for the BP 210 and BP 230 series transmissions. It is also a direct replacement for units in the WG180, WG200, and WG210 model families where the same hydraulic circuit architecture is employed. Always verify that your transmission housing configuration matches the filter seat geometry; the HOUS.FRONT SECT and HOUSING REAR PART must be free of cracks to ensure a proper seal. For complete assembly integrity, the CASE should also be inspected during filter replacement.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4681101002 | TRANSMISSION HOUSING | Main structural casing that encloses all rotating assemblies |
| 4681201007 | HOUS.FRONT SECT | Forward section of the housing supporting the input shaft |
| 4681201008 | HOUSING REAR PART | Rear section of the housing containing the output bearing |
| 4681298001 | CASE | External protective shell for the valve body assembly |
| 0631306074 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | Fastener for securing the filter cover plate |
| 4681301015 | FIXING PLATE | Retainer bracket that holds the filter element in position |
| 4681301016 | SCREEN SHEET | Primary filtration mesh for coarse debris |
| 4681301017 | SCREEN SHEET | Secondary fine-mesh screen for particulate capture |
| 0636100803 | CAP SCREW | Bolt for mounting the fixing plate to the housing |
Frequently Asked Questions
Q: How often should the ZF 4681.138.003 filter be replaced?
A: ZF recommends replacing this filter every 500 operating hours or during any major transmission overhaul. In severe-duty applications (e.g., construction or mining), more frequent changes at 250-hour intervals are advised to prevent hydraulic system contamination.
Q: Can I use a generic aftermarket filter instead of this OEM part?
A: While aftermarket filters may fit physically, they often lack the precise micron rating and burst pressure of the genuine 4681.138.003. Using a non-OEM filter can lead to inadequate filtration, causing premature wear on valve bodies and clutch packs. For warranty retention and reliability, always choose the OEM component.
Q: What other parts should I inspect when replacing this filter?
A: It is prudent to examine the FIXING PLATE for deformation and replace both SCREEN SHEET elements (4681301016 and 4681301017) simultaneously. Additionally, check the CAP SCREW torque specifications to ensure a leak-free seal.
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ZF 4681.138.003 FILTER – Filter RFQ Support
PartsZF helps B2B buyers source ZF 4681.138.003 FILTER with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This filter 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 4681.138.003 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: BP 210
- Illustration section: BP 230
- Illustration section: FILTER
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 | 4681.138.003 |
|---|---|
| Normalized SKU | 4681138003 |
| Part name | FILTER |
| Product category | filter |
| 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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