Overview
The ZF 6057.018.047 CONTROL UNIT is a precision electro-hydraulic valve body assembly designed specifically for the WG 171 series. This OEM genuine part governs clutch pressure modulation and shift timing within the transmission’s main control circuit. Mounted directly onto the TRANSMISSION HOUSING, it interprets electronic signals from the TCU to direct oil flow to the appropriate clutch packs. The SKU 6057.018.047 is a direct replacement unit that restores factory shift quality and prevents erratic gear engagement in heavy-duty ZF powershift transmissions.
Symptoms of Failure
- Delayed or harsh shifting under load — When the control unit loses internal sealing integrity, hydraulic pressure bleeds off, causing jarring upshifts or prolonged neutral gaps between gears.
- Transmission stuck in limp-home mode — A failing solenoid or worn spool valve inside the 6057.018.047 can trigger fault codes that force the transmission into a single-gear safety mode.
- Intermittent gear slippage at highway speeds — Degraded internal O-rings allow cross-leakage between circuits, resulting in momentary loss of torque transfer during cruising.
- Oil contamination from internal debris — Metal particles shed from a deteriorating control unit can migrate through the SCREEN SHEET and damage downstream components.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 6057.018.047 |
| OEM Reference | ZF 6057.018.047 |
| Material | Die-cast aluminum alloy with hardened steel spools |
| Weight | 2.85 kg (6.28 lbs) |
| Dimensions (L × W × H) | 280 mm × 145 mm × 95 mm |
| Seal Type | Nitrile rubber O-rings (integrated) |
| Operating Pressure Range | 8–22 bar |
Compatibility
This control unit is engineered for the ZF WG 171 series. Based on its hydraulic architecture, the 6057.018.047 is also compatible with WG 180, WG 200, and select WG 150 variants that share the same valve body footprint. Always verify the HOUS.FRONT SECT casting number to confirm interchangeability. The unit interfaces directly with the TUBE that routes pilot pressure from the main pump.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing that supports the control unit and gear train |
| 4656301066 | HOUS.FRONT SECT | Front section housing that aligns the input shaft and control valve bores |
| 4656201015 | SCREEN SHEET | Fine-mesh filter that protects the control unit from particulate contamination |
| 4656301037 | TUBE | Steel pressure tube delivering regulated oil from the pump to the control unit |
| 0634313514 | O-RING | Seals the control unit mounting face to prevent external leakage |
| 0636100803 | CAP SCREW | M10 fastener securing the control unit to the housing |
| 4656301042 | HOUSING REAR PART | Rear housing section that encloses the output shaft and governor assembly |
| 0631306816 | CYLINDRICAL PIN | Dowel pin for precise alignment of the control unit during installation |
| 0636100801 | CAP SCREW | M8 fastener for the valve body cover plate |
| 0636100160 | CAP SCREW | M6 hex-head bolt for securing the solenoid harness bracket |
Frequently Asked Questions
Q: Can the 6057.018.047 be rebuilt with a seal kit?
A: While external O-rings can be replaced, internal spool bore wear typically requires complete unit replacement. ZF does not authorize field rebuilding of this control unit due to critical clearance tolerances.
Q: Does this part require programming after installation?
A: No. The 6057.018.047 is a hydraulic-only control unit with no onboard electronics. It does not require TCU coding or calibration.
Q: How do I verify this control unit fits my WG171 transmission?
A: Check the casting number on the HOUS.FRONT SECT for a matching bolt pattern. The unit also requires the correct O-RING profile to seal properly against the housing face.
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ZF 6057.018.047 CONTROL UNIT – Control Unit RFQ Support
PartsZF helps B2B buyers source ZF 6057.018.047 CONTROL UNIT with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This control unit page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 6057.018.047 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4656073009
- Documentation reference available for RFQ review
- Illustration section: LOOSE PARTS
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 6057.018.047 |
|---|---|
| Normalized SKU | 6057018047 |
| Part name | CONTROL UNIT |
| Product category | control unit |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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