Overview
The ZF 4656.056.130 is a critical OEM genuine component designed specifically for the WG 160 Series transmission. This precision-engineered part serves as a key interface element within the hydraulic control system, managing fluid distribution to ensure smooth gear engagement and consistent torque delivery. As an original ZF part, SKU 4656.056.130 guarantees exact fitment and factory-specified performance, reducing the risk of premature wear in heavy-duty commercial applications. It sits within the valve body assembly, directly influencing shift quality and overall transmission reliability.
Symptoms of Failure
When the ZF 4656.056.130 begins to degrade, operators often notice distinct operational issues. Common failure symptoms include:
- Erratic shifting or delayed engagement — The transmission may hesitate before moving into gear, especially under load, indicating compromised fluid control.
- Intermittent gear slipping — A worn 4656.056.130 can cause pressure loss, leading to momentary loss of power during acceleration or hill climbs.
- Hydraulic fluid contamination — Debris from a failing part can circulate through the system, accelerating wear on adjacent components like the TRANSMISSION HOUSING.
- Audible whining or grinding noises — Abnormal sounds from the transmission sump often accompany internal wear, signaling the need for immediate inspection.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number (SKU) | 4656.056.130 |
| OEM Reference | ZF 4656.056.130 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 95 mm x 45 mm x 30 mm |
| Operating Temperature Range | -40°C to +120°C |
| Compatible Fluid Type | ZF-approved ATF or mineral oil |
Compatibility
This genuine ZF part is engineered for the WG 160 Series transmission family. It is also compatible with select models in the WG 180 and WG 200 series, provided the valve body configuration matches. For proper installation, the 4656.056.130 works in conjunction with the HOUS.FRONT SECT and the HOUSING REAR PART to maintain structural integrity. Additionally, the HOUSING REAR SECTION is often replaced simultaneously to prevent fluid leaks. Always verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101057 | TRANSMISSION HOUSING | Main structural casing for gear and shaft assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft and bearings |
| 4656201078 | HOUSING REAR PART | Rear section supporting output shaft and seals |
| 4656298050 | HOUSING REAR SECTION | Additional rear housing component for extended models |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing assembly |
| 4656301148 | FIXING PLATE | Secures internal components to prevent axial movement |
| 0636100817 | CAP SCREW | High-tensile fastener for housing attachment |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid debris |
| 4656301017 | SCREEN SHEET | Secondary filter screen for enhanced fluid purity |
| 0636100803 | CAP SCREW | Fastener for valve body and cover plates |
Frequently Asked Questions
Q: How do I know if the 4656.056.130 is the correct part for my WG160 transmission?
Verify your transmission’s serial number and compare it to the OEM parts list. This SKU is specifically designed for WG 160 Series units, but cross-referencing with your vehicle’s VIN or transmission tag is recommended.
Q: Can I replace the 4656.056.130 without removing the entire transmission?
In most cases, yes. This part is accessible after draining the fluid and removing the transmission pan and valve body. However, always consult the ZF service manual for your specific model to avoid damaging adjacent components.
Q: What other parts should I replace at the same time?
For optimal reliability, consider replacing the SCREEN SHEET (4656301016) and all associated CAP SCREW (0636100803) fasteners to prevent future leaks and contamination.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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