Overview
The ZF 6057.018.422 CONTROL UNIT is a precision electronic component designed specifically for the WG 171 series transmission. This OEM genuine part acts as the central command module, managing hydraulic valve actuation and shift timing within the transmission’s valve body assembly. By processing input signals from the vehicle’s ECU and driver controls, it ensures precise gear engagement and smooth power delivery under varying load conditions. The SKU 6057.018.422 is engineered to meet ZF’s strict factory tolerances, making it a direct replacement for failed units in heavy-duty commercial and industrial applications.
Symptoms of Failure
- Erratic shifting or gear hunting — When the control unit malfunctions, the transmission may struggle to find the correct gear, causing the vehicle to surge or hesitate during acceleration. This is often accompanied by a “check transmission” warning light on the dashboard.
- Delayed engagement from neutral to drive — A worn 6057.018.422 unit can cause a noticeable lag of 2-3 seconds when shifting from park or neutral into a forward gear, increasing the risk of rollback on inclines.
- Transmission overheating under normal load — Faulty control logic may keep the torque converter unlocked or hold gears too long, generating excessive heat. This often leads to degraded transmission fluid and premature wear of internal components.
- Intermittent loss of reverse gear — A specific failure mode of this control unit is the inability to engage reverse, particularly after the transmission has reached operating temperature, requiring a system reset to restore function.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 6057.018.422 |
| OEM Reference | ZF 6057.018.422 |
| Material | Die-cast aluminum housing with glass-filled nylon connector |
| Weight | 1.2 kg (2.65 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 55 mm |
| Operating Voltage | 12V / 24V DC (vehicle-dependent) |
| Operating Temperature Range | -40°C to +120°C |
| Sealing Type | Integrated O-ring seal (compatible with 0634313514: O-RING) |
| Mounting Hardware | Requires 0636100803: CAP SCREW (4x) |
Compatibility
This control unit is primarily engineered for the ZF WG 171 series transmission, but its electronic architecture also supports select models in the WG180 and WG200 families. It is commonly found in municipal buses, refuse trucks, and medium-duty delivery vehicles manufactured between 2008 and 2018. For proper fitment, verify that your transmission’s valve body uses the same 12-pin connector pattern and mounting bolt spacing as the 6057.018.422. The unit integrates directly with the 4656101028: TRANSMISSION HOUSING and is secured to the 4656301066: HOUS.FRONT SECT via dedicated mounting bosses. A protective 4656201015: SCREEN SHEET should be installed between the control unit and the housing to prevent debris ingress. Additionally, the 4656301037: TUBE routes hydraulic fluid to the control unit’s pressure sensors.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing that encloses all gear sets and valve body components |
| 4656301066 | HOUS.FRONT SECT | Front section of the housing that supports the control unit and pump assembly |
| 4656201015 | SCREEN SHEET | Fine mesh filter that protects the control unit from metallic debris and contaminants |
| 4656301037 | TUBE | Hydraulic feed line that delivers pressurized fluid to the control unit’s valve spools |
| 0634313514 | O-RING | Seals the control unit to the housing to prevent fluid leaks |
| 0636100803 | CAP SCREW | M8 fastener used to secure the control unit to the front housing section |
| 4656301042 | HOUSING REAR PART | Rear housing section that contains the output shaft and speed sensor mounting points |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel that ensures precise positioning of the control unit during assembly |
| 0636100801 | CAP SCREW | M6 fastener for attaching the screen sheet and tube bracket |
| 0636100160 | CAP SCREW | M10 fastener used for securing the rear housing section to the main casing |
Frequently Asked Questions
Q: Can the ZF 6057.018.422 control unit be repaired, or must it be replaced?
A: This unit is a sealed electronic assembly with no serviceable internal components. If diagnostic testing confirms internal circuit failure, replacement with the OEM genuine part 6057.018.422 is the only reliable solution. Attempting to repair the unit often leads to intermittent failures and potential damage to the transmission valve body.
Q: What is the typical lifespan of this control unit in a WG171 transmission?
A: Under normal operating conditions with regular fluid and filter changes, the 6057.018.422 control unit typically lasts 150,000 to 200,000 miles. Premature failure is often caused by contaminated transmission fluid or voltage spikes from the vehicle’s electrical system. Always replace the 4656201015: SCREEN SHEET when installing a new control unit to ensure clean fluid flow.
Q: Do I need to reprogram the control unit after installation?
A: Yes, the 6057.018.422 control unit requires a ZF-specific diagnostic tool to perform a “teach-in” procedure after installation. This calibrates the unit to the specific transmission’s clutch wear characteristics and shift pressures. Failure to perform this step can result in harsh shifts and reduced transmission life.
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ZF 6057.018.422 CONTROL UNIT – Control Unit RFQ Support
PartsZF helps B2B buyers source ZF 6057.018.422 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 6057.018.422 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4656073043
- 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 | 6057.018.422 |
|---|---|
| Normalized SKU | 6057018422 |
| 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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