Overview
This OEM genuine ZF 4657.130.080 is a precision-engineered component designed specifically for the WG 160 series transmission. As a critical internal part, it functions as a hydraulic control element that modulates fluid pressure within the valve body assembly, ensuring precise gear engagement and smooth power delivery. The SKU 4657.130.080 sits directly within the main control unit, interfacing with the TRANSMISSION HOUSING to regulate clutch pack actuation. Manufactured to ZF’s exacting tolerances, this genuine part guarantees reliable performance in heavy-duty commercial applications where transmission integrity is non-negotiable.
Symptoms of Failure
- Erratic gear engagement during low-speed maneuvering: When the 4657.130.080 wears, hydraulic pressure fluctuations cause delayed or harsh shifting, particularly noticeable when navigating loading docks or stop-and-go traffic.
- Transmission fluid seepage around the valve body interface: Degraded sealing surfaces lead to oil weeping, often misdiagnosed as a simple gasket failure. This symptom typically appears alongside wear in the HOUS.FRONT SECT.
- Intermittent loss of drive in higher gears: Internal spool valve sticking causes momentary power loss under load, a condition that worsens as the part accumulates operating hours.
- Audible hydraulic whine or chatter: Cavitation from restricted oil flow produces a distinct metallic noise, indicating the 4657.130.080 can no longer maintain proper fluid dynamics.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.130.080 |
| OEM Reference | ZF 4657.130.080 (Genuine) |
| Material | Hardened alloy steel with nitrided surface |
| Weight | 0.42 kg (0.93 lbs) |
| Length | 78.5 mm |
| Outer Diameter | 32.0 mm |
| Seal Type | PTFE lip seal with integrated O-ring |
| Operating Pressure | 12-18 bar (174-261 psi) |
Compatibility
This genuine ZF 4657.130.080 is primarily engineered for the WG 160 Series transmission family. It is also compatible with the WG 180 and WG 200 models when used in conjunction with the appropriate HOUSING REAR PART. The part fits all WG160 variants produced after 2012, including the WG160-8 and WG160-10 configurations. For applications requiring the HOUSING REAR SECTION, verify the specific revision letter stamped on your transmission housing before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns valve body components during assembly |
| 4656301148 | FIXING PLATE | Secures hydraulic control module to housing |
| 0636100817 | CAP SCREW | Fastens pressure regulator assembly |
| 4656301016 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4656301017 | SCREEN SHEET | Secondary filtration for fine particles |
| 0636100803 | CAP SCREW | Mounts solenoid bracket to housing |
Frequently Asked Questions
Q: Can I install the 4657.130.080 without replacing the TRANSMISSION HOUSING?
A: Yes, provided the housing mating surface shows no scoring or corrosion. However, we recommend inspecting the TRANSMISSION HOUSING for wear during any valve body service, as hidden damage can compromise the new part’s sealing.
Q: How does this part differ from aftermarket alternatives?
A: The OEM genuine 4657.130.080 uses ZF-specific steel alloys and surface treatments that aftermarket parts rarely replicate. This ensures consistent hydraulic response across the full operating temperature range of -20°C to 120°C.
Q: What torque specification applies to the retaining bolts?
A: For the cap screws securing this component, use 28 Nm (20.6 ft-lbs) with thread locker applied to the CAP SCREW fasteners. Always consult the WG160 service manual for exact values.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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