ZF 6073.003.018 CONTROL UNIT for WG94 | OEM Genuine Part

Overview

The ZF 6073.003.018 CONTROL UNIT is a critical electronic-hydraulic interface module designed for the WG 94 series transmission family. This OEM genuine part governs shift timing, pressure modulation, and clutch engagement within the valve body assembly. As the central command node, it translates electronic signals from the transmission control module (TCM) into precise hydraulic actions. The SKU 6073.003.018 is engineered to exact ZF tolerances, ensuring seamless integration with the HOUSING and HOUSING components that enclose the valve body stack.

Symptoms of Failure

• Erratic shifting or harsh engagement: When the control unit degrades, the transmission may slam into gear or hesitate between shifts, often accompanied by a delayed forward or reverse engagement.
• Intermittent loss of gear selection: A failing unit can cause the transmission to drop out of gear unexpectedly, particularly under load or during temperature fluctuations.
• Transmission fluid contamination: Internal seal degradation within the control unit allows metallic debris to enter the hydraulic circuit, leading to valve sticking and premature wear of the CYLINDRICAL PIN guides.
• Diagnostic trouble codes (DTCs) for solenoid circuits: The unit may trigger codes related to pressure control or shift solenoid malfunctions, even when the solenoids themselves test within specification.

Technical Specifications

Compatibility

This control unit is primarily specified for the ZF WG94 series, including the WG94-1, WG94-2, and WG94-3 variants. It is also compatible with select WG180 and WG200 models that share the same valve body architecture. Always verify the TYPE PLATE on your transmission to confirm exact fitment. The unit interfaces directly with the LOOSE PARTS kit that contains necessary seals and fasteners for installation.

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