Overview
The ZF 6057.018.421 CONTROL UNIT is a critical electronic module within the WG160 transmission series, responsible for managing hydraulic pressure modulation and shift timing. This OEM genuine part acts as the brain of the gearbox, interpreting input from sensors to execute precise gear changes. The SKU 6057.018.421 is specifically engineered to regulate solenoid valves and monitor clutch pack engagement, ensuring smooth power delivery under heavy-duty cycles. It mounts directly onto the valve body assembly, interfacing with the TRANSMISSION HOUSING to maintain sealed communication pathways.
Symptoms of Failure
- Erratic shift patterns or delayed engagement — When the control unit degrades, the transmission may hesitate before shifting or exhibit harsh, unpredictable gear changes during acceleration.
- Intermittent loss of forward or reverse gears — A failing 6057.018.421 can cause sudden neutral conditions, where the transmission drops out of gear without warning, especially under load.
- Transmission fluid contamination from internal short circuits — Electrical failures within the control unit can burn internal seals, introducing metallic debris into the hydraulic circuit and causing premature wear on the HOUS.FRONT SECT.
- Persistent diagnostic trouble codes for solenoid circuits — The unit may trigger fault codes related to pressure control solenoids, even after replacing external wiring, indicating internal board failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6057.018.421 |
| OEM Reference | ZF 6057.018.421 |
| Material | Die-cast aluminum housing with epoxy-sealed PCB |
| Weight | 1.45 kg (3.2 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 55 mm |
| Operating Voltage | 12V DC / 24V DC compatible |
| Connector Type | 40-pin AMP/TE sealed connector |
| Torque Spec | 8 Nm (mounting bolts) |
Compatibility
This control unit is primarily designed for the ZF WG160 series, but it also fits select variants of the WG180 and WG200 transmissions produced after 2012. It is compatible with both off-highway and on-highway applications where the WG160 valve body configuration is used. The unit interfaces directly with the HOUSING REAR PART and the HOUSING REAR SECTION to complete the electronic control circuit. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101055 | TRANSMISSION HOUSING | Encloses gear train and supports control unit mounting |
| 4656201075 | HOUS.FRONT SECT | Front section housing for pump and torque converter |
| 4656201076 | HOUSING REAR PART | Rear housing section for output shaft support |
| 4656298047 | HOUSING REAR SECTION | Extended rear housing for PTO adapters |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 4656301148 | FIXING PLATE | Secures control unit to valve body |
| 0636100817 | CAP SCREW | M8 bolt for housing fastening |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return line |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M6 bolt for cover plate retention |
Frequently Asked Questions
Q: Can the 6057.018.421 be repaired, or must it be replaced?
A: Due to the sealed epoxy construction and sensitive electronics, ZF recommends full replacement rather than repair. Attempting to open the unit often damages the internal circuit board.
Q: Does this control unit require programming after installation?
A: Yes, the 6057.018.421 must be calibrated to the specific WG160 transmission using ZF diagnostic software. It does not carry pre-loaded vehicle-specific parameters.
Q: What causes premature failure of this control unit?
A: Common causes include thermal stress from high operating temperatures, vibration damage from loose mounting, and moisture ingress through damaged connector seals.
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ZF 6057.018.421 CONTROL UNIT – Control Unit RFQ Support
PartsZF helps B2B buyers source ZF 6057.018.421 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 6057.018.421 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4656054148
- 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 | 6057.018.421 |
|---|---|
| Normalized SKU | 6057018421 |
| 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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