Overview
This OEM genuine ZF 6057.008.042 component is a precision-engineered part designed specifically for the WG 158 Series transmission. It functions as a critical hydraulic control element within the valve body assembly, modulating oil flow to ensure smooth clutch engagement and gear shifts. The SKU 6057.008.042 is manufactured to ZF’s exacting tolerances, making it essential for maintaining the integrity of the transmission’s hydraulic circuit. When installed alongside a properly sealed TRANSMISSION HOUSING, this part ensures consistent pressure regulation across all operating ranges.
Symptoms of Failure
- Erratic shift timing or gear slipping under load — A worn 6057.008.042 can cause delayed or harsh shifts, particularly when the transmission is hot, as internal leakage disrupts hydraulic balance.
- Oil seepage around the valve body area — Deterioration of sealing surfaces leads to visible fluid leaks, often mistaken for a failing SHIFT SYSTEM.
- Intermittent loss of drive in forward or reverse — Internal wear can cause pressure drops that prevent clutch packs from fully engaging, resulting in temporary power loss.
- Increased transmission operating temperature — Hydraulic inefficiency from a degraded component forces the system to work harder, generating excess heat.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 6057.008.042 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 0.42 kg (0.93 lbs) |
| Length | 78 mm |
| Width | 32 mm |
| Height | 28 mm |
| Seal Type | PTFE lip seal integrated |
| Operating Pressure Range | 8–18 bar |
Compatibility
This genuine ZF 6057.008.042 is primarily designed for the WG 158 Series transmission. It is also compatible with select models in the WG180 and WG200 families where the valve body architecture shares identical hydraulic porting. For proper fitment, always verify that the GEAR SHIFT HOUSING and the SCREW-IN SLEEVE are free from damage during installation. Cross-reference with your transmission’s serial number to confirm compatibility with earlier WG150 variants.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101190 | TRANSMISSION HOUSING | Encloses and supports all internal gear and clutch assemblies |
| 4644159347 | SHIFT SYSTEM | Controls hydraulic routing for gear selection |
| 4475280036 | SCREW-IN SLEEVE | Provides threaded mounting point for hydraulic lines |
| 4644306511 | GEAR SHIFT HOUSING | Houses shift forks and selector mechanisms |
| 4644306440 | PISTON | Converts hydraulic pressure into mechanical force for clutch actuation |
| 0635470104 | ROLLER | Reduces friction in shift rail movement |
| 0730006344 | RING | Seals hydraulic passages between valve body sections |
| 0730006345 | RING | Provides backup seal for high-pressure circuits |
| 0730006346 | RING | Prevents cross-leakage between clutch feed ports |
| 0730006347 | RING | Outer diameter seal for piston bore retention |
Frequently Asked Questions
Q: Can the 6057.008.042 be replaced without removing the entire transmission?
A: Yes, in most WG158 applications this component is accessible after draining the fluid and removing the valve body cover. However, we recommend inspecting the SHIFT SYSTEM simultaneously, as wear patterns often correlate.
Q: How do I know if my 6057.008.042 is genuine OEM?
A: Genuine parts feature laser-etched ZF logos and a unique alphanumeric code on the machined surface. Counterfeit units often lack the precise chamfer dimensions required for proper sealing against the GEAR SHIFT HOUSING.
Q: What is the typical service life of this part?
A: Under normal operating conditions with clean fluid, the 6057.008.042 lasts approximately 300,000–400,000 km. Premature failure is often linked to contamination from a damaged TRANSMISSION HOUSING allowing debris ingress.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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