Overview
The ZF 6040.203.002 DISPLAY INSTRUMENT (SKU: 6040.203.002) is a critical operator interface component mounted directly on the transmission control unit or dashboard panel for the WG115, WG158, WG200, and WG208 series. This OEM genuine part provides real-time visual feedback on gear selection, system pressure, and operational status, ensuring the driver or technician can monitor transmission health at a glance. It sits within the electronic control loop, receiving signals from the transmission housing and the engine connection to display accurate data. When paired with a TRANSMISSION HOUSING and a REPAIR KIT, this instrument guarantees seamless integration and reliable performance in heavy-duty industrial applications.
Symptoms of Failure
- Blank or flickering display screen: A worn display instrument often fails to illuminate or shows intermittent flickering, making it impossible to read gear positions or fault codes.
- Inaccurate gear position readout: The instrument may show a different gear than what is actually engaged, leading to operator confusion and potential driveline damage.
- No response to shift commands: When the display instrument fails, the transmission may not acknowledge shift requests, causing the vehicle to remain in neutral or limp mode.
- Persistent warning lights without faults: A failing unit can trigger false warning indicators, even when the transmission housing and connecting housing are fully functional.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6040.203.002 |
| OEM Reference | ZF 6040.203.002 |
| Material | Polycarbonate housing with LCD glass |
| Dimensions (L x W x H) | 120 mm x 80 mm x 35 mm |
| Weight | 0.25 kg |
| Operating Voltage | 12-24 V DC |
| Connector Type | 8-pin Deutsch |
| Operating Temperature | -40°C to +85°C |
Compatibility
This display instrument is engineered for ZF WG-series transmissions, specifically the WG115, WG158, WG200, WG208, and WG98 models. It is also compatible with the WG180 and WG210 variants when used with the appropriate TRANSMISSION HOUSING and SCREW PLUG for mounting. Always verify that your transmission control unit firmware matches the instrument’s protocol. For installations requiring additional sealing, consider the DIAPHRAGM to protect the display from moisture ingress.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101190 | TRANSMISSION HOUSING | Encloses gear sets and supports the display mounting bracket |
| 4644298503 | REPAIR KIT | Contains seals and gaskets for display instrument reinstallation |
| 4644101497 | TRANSMISSION HOUSING | Alternate housing for WG200 series with display cutout |
| 0636305046 | SCREW PLUG | Secures the display instrument to the housing |
| 4644130295 | ENGINE CONNECTION | Provides signal interface between engine and display |
| 4644330355 | CONNECTING HOUSING | Links transmission housing to display instrument |
| 0636015243 | HEXAGON SCREW | Fastens the display instrument bracket |
| 0631329163 | SPRING PIN | Aligns display instrument connector |
| 0631329069 | SPRING PIN | Secures wiring harness to display |
| 4644230054 | DIAPHRAGM | Seals display instrument against vibration and moisture |
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