Overview
The ZF 4657.130.078 is a precision-engineered internal component designed specifically for the WG160, WG190, and WG210 series transmissions. This OEM genuine part serves as a critical interface element within the gear train assembly, ensuring proper alignment and load distribution during operation. The SKU 4657.130.078 is manufactured to ZF’s exacting tolerances, making it essential for maintaining the structural integrity of the transmission housing system. When installed correctly, this component works in concert with the TRANSMISSION HOUSING to prevent unwanted axial movement and reduce vibration under heavy torque loads.
Symptoms of Failure
- Oil seepage around the transmission bell housing – When the 4657.130.078 wears, it can compromise the seal between the HOUS.FRONT SECT and the main case, leading to visible fluid leaks during operation.
- Intermittent gear engagement hesitation – A worn part may cause misalignment, resulting in delayed or rough shifting, particularly under load in WG190 and WG210 models.
- Metallic grinding noise during acceleration – Deterioration of this component allows metal-on-metal contact between the HOUSING REAR PART and rotating elements, producing audible distress signals.
- Increased transmission operating temperature – Friction from a failing 4657.130.078 generates excess heat, often triggering thermal warnings in industrial vehicle dashboards.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.130.078 |
| Material | Hardened alloy steel (40CrMnMo) |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 32.0 mm |
| Thickness | 14.2 mm |
| Surface Treatment | Phosphate coating for corrosion resistance |
| OEM Reference | ZF 4657.130.078 (Genuine) |
Compatibility
This genuine ZF part is engineered for the WG series heavy-duty transmissions. It is directly compatible with the following models: WG160, WG190, and WG210. It also fits the WG180 and WG200 variants when used in conjunction with the HOUSING REAR SECTION. The 4657.130.078 is not recommended for WG120 or WG130 series without consulting the ZF interchange manual. Always verify the housing configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101057 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4656201078 | HOUSING REAR PART | Rear housing segment for output bearing retention |
| 4656298050 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 4656301148 | FIXING PLATE | Secures internal components against axial shift |
| 0636100817 | CAP SCREW | M10 fastener for housing attachment |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump protection |
| 0636100803 | CAP SCREW | M8 bolt for cover plate retention |
Frequently Asked Questions
Q: Can the 4657.130.078 be reused during a rebuild?
A: ZF recommends replacing this part with a new OEM unit during any major overhaul. The hardened alloy steel surface can develop micro-fractures after extended service, compromising alignment precision.
Q: How do I know if my WG190 needs this part replaced?
A: Look for oil stains near the joint between the HOUS.FRONT SECT and the main case. If you measure more than 0.15 mm of axial play at the input shaft, the 4657.130.078 is likely worn.
Q: Is this part interchangeable between WG160 and WG210 models?
A: Yes, the 4657.130.078 is physically identical across all three series. However, always verify the HOUSING REAR SECTION configuration, as WG210 units may require additional shimming.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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