ZF 4168.028.654 CONVERTER Torque Converter Assembly | Complete Unit

Overview

The ZF 4168.028.654 CONVERTER Torque Converter Assembly is a critical hydraulic coupling unit that transfers engine torque to the transmission input shaft within the WG 94 Series. This complete unit replaces the factory torque converter, ensuring precise lock-up and smooth power delivery in heavy-duty ZF drivelines. The SKU 4168.028.654 is engineered to match OEM rotational inertia and stall speed specifications, directly interfacing with the 4661101013 TRANSMISSION HOUSING and the 4661301022 HOUSING to maintain proper alignment and fluid flow.

Symptoms of Failure

• Shuddering or vibration during acceleration: A worn torque converter fails to lock up smoothly, causing noticeable shudder at highway speeds or under load.
• Transmission fluid overheating: Internal stator clutch slippage generates excessive heat, often indicated by a rising temperature gauge or burnt fluid smell.
• Delayed or harsh gear engagement: When the converter fails to build hydraulic pressure correctly, shifts become erratic, and the vehicle may hesitate before moving.
• Torque converter drain-back noise: A distinct whining or grinding sound from the bell housing, especially in neutral, signals bearing or impeller wear.

Technical Specifications

Compatibility

This torque converter assembly is designed for ZF WG 94 Series transmissions, including models such as the WG180, WG200, and WG210. It is also compatible with select WG 92 and WG 96 variants that share the same bell housing bolt pattern and input shaft spline count. Always verify the pilot bore diameter and flexplate mounting holes before installation. When replacing the converter, inspect the 0631306174 CYLINDRICAL PIN for wear and ensure the 0769123894 TYPE PLATE is correctly affixed for future identification.

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