Overview
The ZF 4168.034.125 is an OEM genuine component engineered specifically for the WG160, WG210, and WG211 series transmissions. This precision-machined part functions as a critical interface within the valve body assembly, regulating hydraulic fluid flow to ensure smooth gear engagement and consistent clutch pack pressure. As a direct replacement for worn units, the SKU 4168.034.125 restores factory-specified shift timing and prevents internal cross-leakage. This component works in concert with the 4656101037: TRANSMISSION HOUSING to maintain structural integrity under high torque loads.
Symptoms of Failure
- Delayed or harsh shifting between gears: When the 4168.034.125 wears, hydraulic pressure drops, causing noticeable lag or jarring engagement during acceleration.
- Intermittent transmission slipping under load: A failing unit cannot maintain steady line pressure, leading to momentary power loss on inclines or during heavy towing.
- Visible oil seepage around the valve body area: Degraded sealing surfaces allow ATF to escape, leaving drips on the bell housing or under the vehicle.
- Erratic neutral-to-drive engagement: Worn internal bores cause inconsistent fluid routing, resulting in a delayed or incomplete engagement when shifting from park.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4168.034.125 |
| Material | Hardened aluminum alloy with anodized coating |
| Weight | 0.42 kg (0.93 lbs) |
| Length | 112 mm |
| Width | 48 mm |
| Height | 32 mm |
| Seal Type | Integrated PTFE O-ring |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This genuine ZF part is designed for the WG160, WG210, and WG211 transmission families. It is also compatible with the WG180 and WG200 series when used in conjunction with the 4656201075: HOUS.FRONT SECT and the 4656201035: HOUSING REAR PART. For WG211 applications, pairing with the 4472239178: HOUSING REAR PART ensures proper alignment of the shift rail assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101037 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4656201035 | HOUSING REAR PART | Rear housing section for output shaft support |
| 4472239178 | HOUSING REAR PART | Alternate rear housing for WG211 variants |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 4656301148 | FIXING PLATE | Retaining plate for valve body components |
| 0636100817 | CAP SCREW | M8 fastener for housing bolt-down |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | M6 fastener for valve body cover |
Frequently Asked Questions
Q: Can the 4168.034.125 be installed without removing the transmission?
A: In most WG160 and WG210 applications, the valve body can be accessed by dropping the transmission pan. However, clearance is tight, and we recommend removing the unit for proper torque application on the HOUS.FRONT SECT bolts.
Q: How does this part differ from aftermarket alternatives?
A: OEM genuine 4168.034.125 units feature hardened anodized bores that resist wear from debris. Aftermarket copies often use softer alloys, leading to premature failure of the FIXING PLATE mounting threads.
Q: What torque specification applies to the retaining screws?
A: Use 12 Nm (106 in-lbs) for the CAP SCREW fasteners. Over-torquing can distort the valve body and cause internal binding.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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