Overview
This OEM genuine ZF 6057.018.804 component is a critical internal actuator or shift element designed specifically for the WG 160 Series transmission. Positioned within the valve body or hydraulic control unit, this part directs oil flow to engage clutches and bands, enabling smooth gear changes under heavy load. The SKU 6057.018.804 is precision-machined to factory tolerances, ensuring consistent hydraulic pressure modulation. When paired with a robust TRANSMISSION HOUSING, this part maintains structural integrity during high-torque operations. Its replacement is essential when restoring full shift quality in commercial vehicles and industrial machinery.
Symptoms of Failure
- Delayed or harsh engagement — When the 6057.018.804 wears, hydraulic pressure drops, causing a noticeable lag when shifting from Neutral to Drive or Reverse. This is a common “ZF WG160 hard shift” complaint.
- Intermittent gear slipping — A worn part fails to hold line pressure, leading to “transmission slipping under load” during uphill climbs or acceleration.
- Fluid contamination or debris — Internal spool wear generates metallic particles, often flagged during “ZF transmission oil analysis” as elevated iron content.
- Erratic shift patterns — The transmission may hunt between gears or skip ratios entirely, a symptom frequently searched as “WG160 shifting problems.”
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 6057.018.804 |
| Material | Hardened alloy steel / aluminum composite |
| Weight | 0.45 kg (approx.) |
| Dimensions | 85 mm x 40 mm x 30 mm |
| OEM Reference | ZF 6057.018.804 (Genuine) |
| Operating Pressure | 12–18 bar |
Compatibility
This OEM genuine part is engineered for the ZF WG 160 Series transmission family. It is also compatible with the WG 180 and WG 200 models, as these share the same hydraulic control architecture. The 6057.018.804 interfaces directly with the HOUS.FRONT SECT and the HOUSING REAR PART to form a sealed oil gallery. For full assembly restoration, technicians often replace this unit alongside the HOUSING REAR SECTION to prevent cross-threading or misalignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101056 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section housing pump and converter |
| 4656201077 | HOUSING REAR PART | Rear section supporting output shaft |
| 4656298049 | HOUSING REAR SECTION | End cover with bearing supports |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 4656301148 | FIXING PLATE | Retains valve body components |
| 0636100817 | CAP SCREW | M8 fastener for housing joints |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M6 fastener for valve body |
Frequently Asked Questions
Q: How do I know if the 6057.018.804 is the cause of my shifting issues?
A: Perform a pressure test at the main line tap. If pressure drops below 12 bar during a 1-2 shift, this spool or actuator is likely worn. Inspect for scoring on the bore surface.
Q: Can I reuse the old fixing plate or cap screws when installing this part?
A: No. Always replace the FIXING PLATE and CAP SCREW to ensure proper torque retention and prevent oil leaks.
Q: Is this part interchangeable between WG160 and WG180 transmissions?
A: Yes, the 6057.018.804 is physically identical across WG160, WG180, and WG200 models. However, always verify the valve body revision number to confirm compatibility.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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