Overview
The ZF 4656.056.064 is a precision-engineered OEM genuine component specifically designed for the WG 160 series transmission. This part functions as a critical sealing and alignment element within the gearbox assembly, ensuring proper oil flow and preventing contamination between internal chambers. As an original ZF part, the SKU 4656.056.064 guarantees exact fitment and metallurgical consistency required for heavy-duty commercial vehicle applications. It sits directly within the main housing section, interfacing with the rotating shafts to maintain hydraulic pressure stability during load shifts.
Symptoms of Failure
When the ZF 4656.056.064 begins to wear out, operators typically notice oil seepage around the transmission bell housing during routine inspections. A second common failure symptom is intermittent gear engagement hesitation under moderate to heavy loads, particularly when the transmission is at operating temperature. Third, you may detect abnormal whining or grinding noises emanating from the WG 160 series gearbox during deceleration. Finally, contaminated transmission fluid with metallic particles often indicates that this component has degraded and requires immediate replacement to avoid cascading damage to the TRANSMISSION HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4656.056.064 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 12.7 mm |
| Weight | 0.34 kg |
| OEM Reference | ZF 4656.056.064 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This OEM genuine part is primarily engineered for the ZF WG 160 series transmission. It is also compatible with the WG 180 and WG 200 series models that share the same housing architecture. Additionally, certain variants of the WG 150 and WG 220 transmissions may accept this component, provided the front section configuration matches. Always verify the part number against your transmission’s serial plate before installation. The 4656.056.064 works in conjunction with the HOUS.FRONT SECT and the HOUSING REAR PART to form a complete sealing boundary within the gearbox.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101037 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4656201035 | HOUSING REAR PART | Rear housing section for output shaft alignment |
| 4472239178 | HOUSING REAR PART | Alternate rear housing variant for WG series |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 4656301148 | FIXING PLATE | Secures internal components to housing |
| 0636100817 | CAP SCREW | Fastener for housing attachment points |
| 4656301016 | SCREEN SHEET | Filter screen for oil return circuit |
| 4656301017 | SCREEN SHEET | Secondary filter screen for high-pressure side |
| 0636100803 | CAP SCREW | Bolt for securing the HOUSING REAR PART |
Frequently Asked Questions
Q: How do I know if the 4656.056.064 is the correct replacement for my WG 160 transmission?
A: Check the stamped part number on the original component. If it matches 4656.056.064, it is a direct OEM replacement. You can also cross-reference your transmission serial number with ZF’s compatibility chart for WG 160, WG 180, and WG 200 models.
Q: Can I install this part without removing the entire transmission?
A: In most cases, partial disassembly of the TRANSMISSION HOUSING is required. Access to the component typically involves removing the HOUS.FRONT SECT and the rear housing sections. Professional installation is recommended to ensure proper sealing.
Q: What other parts should I replace when servicing the 4656.056.064?
A: It is advisable to replace the CYLINDRICAL PIN and all CAP SCREW fasteners during reassembly. Additionally, inspect the SCREEN SHEET for debris accumulation and replace if clogged.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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