ZF 4166.034.113 CONVERTER Torque Converter Assembly | Complete Unit

Overview

The ZF 4166.034.113 CONVERTER Torque Converter Assembly is a complete, drop-in replacement unit engineered for the WG 190 and WG 210 series of powershift transmissions. This critical component sits between the engine flywheel and the transmission input shaft, serving as the primary hydraulic coupling that multiplies engine torque while allowing the drivetrain to come to a stop without stalling. The SKU 4166.034.113 is a fully assembled converter, ready for direct installation, and it works in concert with the 4657101033: TRANSMISSION HOUSING to seal the hydraulic circuit and maintain proper fluid pressure during operation.

Symptoms of Failure

• Shuddering or vibration during low-speed maneuvering: A worn torque converter lock-up clutch or damaged stator vanes will cause noticeable shuddering, especially when moving from a standstill under load.
• Delayed or harsh engagement when shifting gears: If the converter fails to build adequate hydraulic pressure, operators will experience a pronounced lag or a jarring “clunk” when shifting between forward and reverse.
• Overheating transmission fluid with a burnt smell: Internal slippage within the 4166.034.113 generates excessive heat, leading to fluid breakdown and a distinct burnt odor emanating from the transmission breather.
• Torque converter drain-back noise (whining or rattling): A failing one-way clutch inside the assembly can produce a high-pitched whine or metallic rattle that changes with engine RPM.

Technical Specifications

Compatibility

This torque converter assembly is specifically designed for ZF’s WG series powershift transmissions. Based on its part number and current categories, the 4166.034.113 is compatible with the WG 190 Series and WG 210 Series. It may also be used in select WG 180 and WG 200 variants where the converter housing bellhousing pattern matches. For proper alignment, ensure the 4657201027: HOUS.FRONT SECT and the 4657201012: HOUSING REAR PART are free of cracks or warping before installation. Additionally, the 0631306792: CYLINDRICAL PIN must be replaced to guarantee correct dowel alignment between the converter and the flywheel.

Related Components

Frequently Asked Questions

Q: Can the 4166.034.113 torque converter be rebuilt, or must it be replaced as a complete unit?
A: While some internal components like the stator or lock-up clutch can theoretically be serviced, ZF recommends replacing the 4166.034.113 as a complete assembly due to the precision balancing required. Rebuilding often leads to premature vibration and failure.

Q: What is the typical service life of this converter in a WG 210 transmission?
A: Under normal operating conditions with clean fluid and proper cooling, the 4166.034.113 typically lasts 4,000 to 6,000 hours. Contaminated fluid or frequent heavy loading will significantly shorten this lifespan.

Q: Do I need to replace the cylindrical pin (0631306792) when installing this converter?
A: Yes. The 0631306792: CYLINDRICAL PIN is a single-use alignment dowel. Reusing the old pin can cause the converter to sit slightly off-center, leading to seal leaks and driveline vibration.