Overview
This OEM genuine ZF 4656.105.007 is a precision-engineered component designed specifically for the WG 160 Series transmission. It serves as a critical internal sealing and alignment element within the gearbox assembly, ensuring proper oil flow and pressure regulation between the main housing sections. The SKU 4656.105.007 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life when replacing worn units. Without this part, the transmission cannot maintain the hydraulic integrity required for smooth gear engagement under heavy loads.
Symptoms of Failure
- Oil leaks at the transmission housing joint: A worn 4656.105.007 often causes visible fluid seepage where the TRANSMISSION HOUSING meets the HOUS.FRONT SECT, leading to low oil levels and potential overheating.
- Intermittent gear slipping under load: When this part degrades, internal pressure drops, causing the transmission to momentarily lose drive in higher gears during uphill climbs or towing.
- Delayed engagement from Park to Drive: A failing 4656.105.007 can create a 2-3 second lag before the transmission engages, often accompanied by a harsh clunk as the clutches finally pressurize.
- Contaminated transmission fluid: Debris from a deteriorating 4656.105.007 can circulate through the system, clogging the SCREEN SHEET and reducing overall filtration efficiency.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4656.105.007 |
| Material | High-grade aluminum alloy with nitrile rubber sealing |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 180 mm x 95 mm x 45 mm |
| OEM Reference | ZF 4656.105.007 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
| Torque Rating | 120 Nm (max) |
Compatibility
This genuine ZF part is primarily engineered for the WG 160 Series transmission family. It is also compatible with the WG 180 and WG 200 series models that share the same housing architecture. The 4656.105.007 interfaces directly with the HOUSING REAR PART and the HOUSING REAR PART (alternate variant) to form a sealed chamber. Always verify your transmission model number before ordering; this part will not fit earlier WG 120 or WG 140 series units without modification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101037 | TRANSMISSION HOUSING | Main structural casing that encloses all internal components |
| 4656201075 | HOUS.FRONT SECT | Front section housing that supports the input shaft and pump |
| 4656201035 | HOUSING REAR PART | Rear housing section that contains the output shaft and parking pawl |
| 4472239178 | HOUSING REAR PART | Alternate rear housing variant for specific WG 160 sub-models |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing positioning during assembly |
| 4656301148 | FIXING PLATE | Retaining plate that secures the valve body to the housing |
| 0636100817 | CAP SCREW | M10 bolt used to fasten the housing sections together |
| 4656301016 | SCREEN SHEET | Fine mesh filter that traps debris before fluid enters the valve body |
| 4656301017 | SCREEN SHEET | Alternate mesh filter variant for high-flow applications |
| 0636100803 | CAP SCREW | M8 bolt for securing the oil pan and filter assembly |
Frequently Asked Questions
Q: How do I know if my ZF WG 160 needs a new 4656.105.007?
A: If you notice oil weeping from the seam between the transmission housing and the front section, or if the transmission hesitates when shifting from neutral to drive, this part is likely compromised. A pressure test showing below-spec readings at the main regulator valve confirms the diagnosis.
Q: Can I install the 4656.105.007 without removing the entire transmission?
A: In most cases, yes. This part is accessible after removing the transmission oil pan and the valve body. However, you must also replace the CYLINDRICAL PIN and CAP SCREW during reassembly to ensure proper alignment and torque retention.
Q: Is the 4656.105.007 interchangeable with aftermarket versions?
A: We strongly recommend using only OEM genuine ZF parts. Aftermarket alternatives often use inferior rubber compounds that harden and crack within 12 months, leading to repeat failures. The genuine 4656.105.007 is formulated to withstand high-temperature ATF exposure for extended service intervals.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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