Overview
This OEM genuine ZF 6057.018.549 component is a critical internal seal and guide element engineered specifically for the WG 160 Series transmission. Positioned within the hydraulic control unit, this part ensures precise oil flow regulation and maintains proper pressure within the clutch pack assembly. The SKU 6057.018.549 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life. When installed alongside a properly sealed TRANSMISSION HOUSING, this part prevents cross-contamination between lubrication circuits and supports smooth gear engagement under heavy load conditions.
Symptoms of Failure
- Erratic shift timing and gear hunting: A worn 6057.018.549 disrupts hydraulic pressure, causing the transmission to hesitate or slip between gears during acceleration.
- Visible oil seepage near the valve body: Deterioration of this seal leads to external leaks, often mistaken for a failing gasket, leaving puddles under the vehicle.
- Delayed engagement from Neutral to Drive: Operators may notice a 2-3 second lag when selecting a gear, indicating internal pressure loss from a compromised component.
- Overheating transmission fluid: Inefficient oil routing due to a damaged part forces the system to work harder, raising operating temperatures and accelerating fluid degradation.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 6057.018.549 |
| Material | High-grade nitrile rubber with steel insert |
| Outer Diameter | 38.5 mm |
| Inner Diameter | 22.0 mm |
| Height / Thickness | 12.0 mm |
| Weight | 0.045 kg |
| Operating Temperature Range | -40°C to +150°C |
| Hardness (Shore A) | 70 ± 5 |
Compatibility
This genuine ZF 6057.018.549 is primarily designed for the WG 160 Series transmission. It is also compatible with the WG 180 and WG 200 models when used in the same hydraulic control circuit. The part interfaces directly with the HOUS.FRONT SECT and the HOUSING REAR PART, ensuring a sealed connection between the valve body and the main casing. For heavy-duty applications, it also works with the HOUSING REAR SECTION to maintain structural integrity under high torque.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101057 | TRANSMISSION HOUSING | Main structural casing that encloses all internal components |
| 4656201075 | HOUS.FRONT SECT | Front section housing that supports the input shaft and pump |
| 4656201078 | HOUSING REAR PART | Rear housing segment that secures the output flange |
| 4656298050 | HOUSING REAR SECTION | Additional rear section for extended transmission variants |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing assembly |
| 4656301148 | FIXING PLATE | Secures internal components to prevent axial movement |
| 0636100817 | CAP SCREW | Fastener for attaching housing sections |
| 4656301016 | SCREEN SHEET | Filter screen for oil intake protection |
| 4656301017 | SCREEN SHEET | Secondary filter screen for return line debris |
| 0636100803 | CAP SCREW | Bolt for securing the valve body cover |
Frequently Asked Questions
Q: How do I know if the 6057.018.549 needs replacement?
A: Check for visible cracks or hardening on the rubber lip. If you experience delayed gear engagement or fluid leaks near the valve body, this seal is likely compromised and should be replaced immediately.
Q: Can I reuse the old 6057.018.549 during a rebuild?
A: No. This is a single-use seal that deforms during installation. Always install a new OEM genuine part to ensure proper hydraulic pressure and avoid premature transmission failure.
Q: Is this part compatible with aftermarket housings?
A: It is designed for OEM ZF housings. If you are using an aftermarket TRANSMISSION HOUSING, verify the groove dimensions match the original ZF specifications to ensure a proper seal.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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