Overview
The ZF 4656.056.175 is a precision-engineered OEM genuine component specifically designed for the WG 160 Series transmission. This part serves as a critical internal guide and support element within the gear train assembly, ensuring correct alignment and load distribution during operation. As an OEM genuine part, SKU 4656.056.175 guarantees exact fitment and material integrity, reducing the risk of premature wear in high-torque applications. It is frequently replaced alongside the TRANSMISSION HOUSING and the HOUS.FRONT SECT during a major overhaul to maintain structural rigidity.
Symptoms of Failure
- Audible gear whine or grinding: A worn 4656.056.175 allows excessive axial play, causing gear teeth to misalign under load. This is a common “ZF transmission whining noise” issue.
- Intermittent gear slipping under load: When this part loses its dimensional tolerance, the transmission may momentarily lose torque transfer, especially during uphill climbs or heavy hauling.
- Metallic debris in transmission fluid: As the component wears, fine metal particles contaminate the oil. This often triggers the “ZF transmission metal shavings” search query during diagnostics.
- Oil seepage near the rear housing joint: Degradation of this part can stress the HOUSING REAR PART seal surface, leading to slow leaks.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.056.175 |
| Material | Hardened alloy steel (nitrided) |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 32.0 mm |
| Height / Thickness | 24.7 mm |
| Surface Finish | Ground & phosphate coated |
| OEM Reference | ZF 4656.056.175 (Genuine) |
Compatibility
This genuine part is primarily engineered for the ZF WG 160 Series transmission. Based on its design and dimensional profile, it is also compatible with the WG 180 and WG 200 series transmissions used in medium-duty commercial vehicles and off-road equipment. It interfaces directly with the HOUSING REAR SECTION and should be verified against the original part before installation. Always consult your transmission’s serial number to confirm fitment for WG 160 variants.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101056 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4656201077 | HOUSING REAR PART | Rear housing section for output bearing retention |
| 4656298049 | HOUSING REAR SECTION | Intermediate rear housing adapter plate |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 4656301148 | FIXING PLATE | Retaining plate for internal component lock |
| 0636100817 | CAP SCREW | M10 fastener for housing assembly |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil pickup (variant A) |
| 4656301017 | SCREEN SHEET | Fine mesh filter for oil pickup (variant B) |
| 0636100803 | CAP SCREW | M8 fastener for cover plate retention |
Frequently Asked Questions
Q: Can I use this part in a ZF WG 180 transmission?
A: Yes, the 4656.056.175 is dimensionally compatible with WG 180 and WG 200 series units, though we recommend verifying the original part number on your existing component to ensure exact match.
Q: What is the typical service interval for replacing this component?
A: This part is not a routine maintenance item. It should be inspected during any major transmission rebuild (typically every 300,000–500,000 km) and replaced if any wear step or pitting is visible on the contact surface.
Q: Does this part come with a warranty?
A: As an OEM genuine ZF part, it is covered by the manufacturer’s standard warranty against material defects. Always purchase from authorized distributors to ensure authenticity.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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