ZF 4166.030.045 CONVERTER Torque Converter Assembly | Complete Unit

Overview

The ZF 4166.030.045 CONVERTER Torque Converter Assembly is a critical hydraulic component that transfers engine torque to the transmission input shaft within the WG 180 Series. As a complete unit, it replaces the entire torque converter assembly, including the impeller, turbine, stator, and lock-up clutch mechanism. This SKU 4166.030.045 sits directly between the engine flywheel and the TRANSMISSION HOUSING, converting rotational power into fluid flow to multiply torque during low-speed operation. When the lock-up clutch engages, it provides direct mechanical drive for improved fuel efficiency at highway speeds.

Symptoms of Failure

• Shuddering or vibration during acceleration: Worn internal clutch plates or damaged stator vanes cause uneven torque transfer, often felt as a shudder between 20-40 mph.
• Transmission overheating and fluid darkening: A failing torque converter generates excessive heat due to internal slippage, leading to burnt-smelling, discolored transmission fluid.
• Delayed or harsh engagement: When the converter fails to build proper hydraulic pressure, you may experience a noticeable lag when shifting from Park to Drive or Reverse.
• Whining or grinding noise from bell housing: Worn needle bearings or a damaged impeller hub produce a metallic whine that increases with engine RPM, indicating imminent converter failure.

Technical Specifications

Compatibility

This torque converter assembly is engineered for the ZF WG 180 Series and is also compatible with the WG 200 and WG 150 series transmissions used in medium-duty trucks, buses, and off-highway equipment. It directly replaces OEM units in models such as the WG180, WG180-2, and WG200-3. When installing, ensure the HOUSING is clean and free of debris, and verify that the TYPE PLATE matches your transmission model for correct identification. The converter mounts using GROOVED STUD fasteners to secure it to the flexplate.

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