ZF 4168.034.112 CONVERTER Torque Converter Assembly | Complete Unit

Overview

The ZF 4168.034.112 CONVERTER Torque Converter Assembly is a critical hydraulic component responsible for transferring engine torque to the transmission input shaft while providing fluid coupling and torque multiplication. Positioned between the engine flywheel and the transmission pump, this complete unit ensures smooth power delivery and load management in heavy-duty ZF drivetrains. The SKU 4168.034.112 is a direct replacement assembly, engineered to restore original performance in WG Series transmissions. When installed alongside the 4656101028: TRANSMISSION HOUSING, it forms a sealed hydraulic circuit essential for clutch engagement and gear shifts.

Symptoms of Failure

• Torque converter shudder or vibration during acceleration — Worn internal clutches or damaged stator vanes cause irregular fluid flow, leading to noticeable shaking at low speeds.
• Transmission fluid overheating and dark discoloration — A failing converter generates excessive heat due to internal slippage, often accompanied by a burnt smell and degraded fluid viscosity.
• Delayed or harsh engagement when shifting from Park to Drive — Loss of hydraulic pressure from a worn torque converter results in a pronounced lag or clunk during gear selection.
• Audible whining or grinding noise from the bell housing area — Worn bearings or impeller damage produce metallic sounds that intensify with engine RPM, indicating imminent converter failure.

Technical Specifications

Compatibility

This torque converter assembly is engineered for ZF WG Series powershift transmissions, specifically the WG 171, WG 210, WG 211, and WG 230 models. It is also compatible with the WG 180 and WG 200 variants when used with the correct adapter kit. The unit integrates directly with the 4656301066: HOUS.FRONT SECT and requires the 4656201015: SCREEN SHEET for proper fluid filtration. For oil circulation, the 4656301037: TUBE must be installed to connect the converter to the cooler circuit. Always verify your transmission model and serial number before ordering.

Related Components

Frequently Asked Questions

Q: How do I know if the 4168.034.112 torque converter is failing?
A: Common indicators include a persistent shudder during low-speed acceleration, transmission fluid that appears dark or smells burnt, and a noticeable delay when shifting from Park to Drive. If you hear a whining noise from the bell housing, immediate inspection is recommended.

Q: Can this converter be installed without replacing the transmission housing?
A: While the converter itself is a standalone unit, it is strongly advised to inspect the TRANSMISSION HOUSING for wear or cracks during replacement. The O-RING and CAP SCREW should always be replaced to prevent leaks.

Q: Is the 4168.034.112 compatible with the WG 180 transmission?
A: Yes, this converter is compatible with WG 180 and WG 200 models, provided the correct front housing section (HOUS.FRONT SECT) is used. Always cross-reference your transmission serial number with our compatibility chart.