ZF 4166.034.047 CONVERTER Torque Converter Assembly | Complete Unit

Overview

The ZF 4166.034.047 CONVERTER Torque Converter Assembly is a complete, ready-to-install unit designed for the WG 211 Series transmission family. This critical component sits between the engine flywheel and the transmission input shaft, functioning as a fluid coupling that multiplies engine torque while dampening driveline vibrations. The SKU 4166.034.047 represents a fully assembled converter, including the stator, turbine, and lock-up clutch mechanism. In the WG 211 series, this assembly directly interfaces with the 4657120005: PRESSURE REGULATOR to maintain optimal hydraulic pressure for smooth power transfer. Without a properly functioning torque converter, the transmission cannot efficiently transmit engine power to the drivetrain.

Symptoms of Failure

• Shuddering or vibration during acceleration — Worn internal clutch friction material causes noticeable shaking, especially at highway speeds.
• Transmission fluid overheating — A failing converter generates excessive heat due to internal slippage, often triggering warning lights or burnt fluid smell.
• Delayed or harsh engagement — When shifting from Park to Drive or Reverse, the vehicle hesitates or jerks as the converter fails to lock up properly.
• Whining or grinding noises from the bell housing — Damaged bearings or stator components produce audible sounds that intensify with engine RPM.

Technical Specifications

Compatibility

This torque converter assembly is primarily designed for the ZF WG 211 Series transmissions. Based on its part number and physical dimensions, it is compatible with the following ZF models: WG180, WG200, WG211, and WG250 series. It is commonly used in medium-duty trucks, buses, and off-highway equipment. For proper installation, ensure the 0501211384: VALVE and 0630532183: INDENTED RING are inspected and replaced if worn. The 4656306145: PISTON should also be checked for scoring or damage during converter replacement.

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