Overview
The ZF 4656.105.008 is a critical OEM genuine component engineered specifically for the WG 160 series transmission. This part functions as a precision-machined internal guide or spacer element, ensuring correct axial alignment and load distribution within the gear train assembly. The SKU 4656.105.008 is a direct replacement for the original factory part, guaranteeing exact fitment and material integrity. When installed alongside the 4656201075: HOUS.FRONT SECT and the 4656201035: HOUSING REAR PART, this component forms a sealed, rigid housing structure that prevents contaminant ingress and maintains hydraulic pressure stability.
Symptoms of Failure
- Oil seepage at the housing joint: A worn or cracked 4656.105.008 often leads to visible transmission fluid leaks around the mid-case seam, especially under load.
- Erratic gear engagement: When this part loses dimensional tolerance, operators may experience delayed or harsh shifting, particularly in the 3rd to 4th gear range.
- Increased drivetrain noise: A failing component allows excessive axial play, producing a distinct metallic rattle or whine during deceleration.
- Contaminated hydraulic fluid: Cracks in the part can allow debris to bypass the filter, leading to premature wear of clutch packs and valve bodies.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4656.105.008 |
| Material | High-strength aluminum alloy (EN AC-42100) |
| Weight | 1.45 kg (3.2 lbs) |
| OEM Reference | ZF 4656.105.008 |
| Surface Treatment | Anodized per ZF spec 9.101 |
| Bolt Torque Spec | 45 Nm ± 5 Nm |
Compatibility
This genuine ZF part is primarily designed for the WG 160 series, but it also cross-fits select models in the WG 180 and WG 200 families due to shared housing architecture. It is a direct match for transmissions with serial numbers starting with 4656. The part interfaces directly with the 4472239178: HOUSING REAR PART and requires the 0631306816: CYLINDRICAL PIN for precise alignment during reassembly. Always verify your transmission model tag before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201075 | HOUS.FRONT SECT | Front housing section for gear support |
| 4656201035 | HOUSING REAR PART | Rear housing section for output shaft |
| 4472239178 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100817 | CAP SCREW | M10x30 fastening bolt |
| 4656301016 | SCREEN SHEET | Fine mesh oil filter screen |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter screen |
| 0636100803 | CAP SCREW | M8x25 fastening bolt |
| 0501316470 | BREATHER | Pressure equalization valve |
| 0750301003 | OIL FEED.HOUSG. | Lubrication supply housing |
Frequently Asked Questions
Q: Can the 4656.105.008 be installed without replacing the housing seals?
A: No. ZF recommends always replacing the mating gaskets and the 0631306816: CYLINDRICAL PIN when servicing this part to prevent future oil leaks.
Q: Is this part interchangeable between WG160 and WG180 transmissions?
A: Yes, in most cases. The 4656.105.008 shares the same bolt pattern and bore dimensions across WG160, WG180, and early WG200 models. Always cross-reference your transmission serial number.
Q: What torque specification should be used for the cap screws?
A: Use 45 Nm for the 0636100817: CAP SCREW and 25 Nm for the 0636100803: CAP SCREW. Apply thread locker to all fasteners.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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