Overview
The ZF 6057.018.278 CONTROL UNIT is a critical electronic actuator module designed specifically for the WG 171 series automatic transmissions. This OEM genuine part governs hydraulic pressure modulation and shift timing, ensuring precise gear engagement under heavy-duty industrial loads. Located within the valve body assembly, the control unit interprets input from the transmission control module (TCM) to regulate clutch pack application. The SKU 6057.018.278 is manufactured to ZF’s exacting tolerances, making it a direct replacement for failed units without requiring adapter plates or harness modifications. When installed alongside a properly sealed TRANSMISSION HOUSING, this control unit restores factory-spec shift quality.
Symptoms of Failure
- Erratic shifting or gear hunting: A failing control unit disrupts solenoid current, causing the transmission to slip between gears or fail to hold a selected ratio under load.
- Delayed engagement from Neutral to Drive: Worn internal electronics create a 3-5 second lag before the transmission engages, often accompanied by a harsh clunk.
- Intermittent loss of reverse gear: The control unit’s inability to modulate reverse clutch pressure leads to complete loss of reverse function, particularly after thermal cycling.
- Transmission entering limp-home mode: Fault codes P0700 or P0715 frequently appear, forcing the gearbox into a single fixed gear until the 6057.018.278 is replaced.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 6057.018.278 |
| Material | Die-cast aluminum housing with glass-filled nylon connector |
| Weight | 1.42 kg (3.13 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 65 mm |
| Operating Voltage | 12V DC (nominal), 9-16V range |
| Operating Temperature | -40°C to +125°C |
| Sealing Type | Integrated gasket (requires O-RING replacement) |
| Mounting Hardware | 4x CAP SCREW M6 x 20 mm |
Compatibility
This control unit is engineered for the ZF WG 171 series, but its valve body footprint also fits WG 180, WG 200, and select WG 150 variants produced after 2008. The 6057.018.278 is not compatible with Ecomat or Ecolife series transmissions. For proper installation, the HOUS.FRONT SECT must be free of debris, and the SCREEN SHEET should be inspected for clogging. Always replace the TUBE that routes hydraulic fluid to the control unit if scoring is visible.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Encloses gear train and valve body assembly |
| 4656301066 | HOUS.FRONT SECT | Front section housing for torque converter and pump |
| 4656201015 | SCREEN SHEET | Fine mesh filter protecting control unit from debris |
| 4656301037 | TUBE | Hydraulic feed line to control unit valve body |
| 0634313514 | O-RING | Seals control unit mounting flange |
| 0636100803 | CAP SCREW | M6 fastener for control unit retention |
| 4656301042 | HOUSING REAR PART | Rear transmission housing cover |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | M8 fastener for front housing |
| 0636100160 | CAP SCREW | M10 fastener for rear housing |
Frequently Asked Questions
Q: Can the 6057.018.278 be repaired instead of replaced?
A: ZF does not authorize field repair of this sealed control unit. Internal circuit board damage from heat or vibration cannot be reliably restored. Replacement with OEM part 6057.018.278 is the only recommended solution.
Q: Does this control unit require programming after installation?
A: No. The 6057.018.278 is a self-contained actuator that receives shift commands directly from the TCM via the existing wiring harness. No flash programming or dealer-level coding is necessary.
Q: What other parts should be replaced at the same time?
A: Always install a new O-RING and inspect the SCREEN SHEET for contamination. If the TUBE shows wear marks, replace it to prevent future hydraulic leaks.
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ZF 6057.018.278 CONTROL UNIT – Control Unit RFQ Support
PartsZF helps B2B buyers source ZF 6057.018.278 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 6057.018.278 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4656073034
- 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 | 6057.018.278 |
|---|---|
| Normalized SKU | 6057018278 |
| 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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