Overview
The ZF 4168.028.168 CONVERTER Torque Converter Assembly is a complete, ready-to-install unit designed for the WG 100 Series transmission family. As the critical fluid coupling between the engine and the gearbox, this torque converter multiplies engine torque and provides smooth power delivery during shifting. The SKU 4168.028.168 is a direct replacement assembly that includes the impeller, turbine, stator, and lock-up clutch components. It sits at the front of the transmission housing, directly interfacing with the 4651101007: TRANSMISSION HOUSING to ensure proper alignment and sealing.
Symptoms of Failure
- Shudder or vibration during lock-up engagement: When the torque converter clutch fails to engage smoothly, operators often report a distinct shudder under light throttle, especially at highway speeds.
- Delayed or harsh shifting: A worn converter can cause erratic hydraulic pressure, leading to delayed gear engagement or harsh shifts between forward gears.
- Overheating transmission fluid: Internal slippage within the converter generates excessive heat, causing the transmission to run hotter than normal and potentially triggering warning lights.
- Low stall speed or engine stalling: If the stator or one-way clutch fails, the converter may not multiply torque properly, resulting in poor acceleration or stalling when coming to a stop.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4168.028.168 |
| Assembly Type | Complete Torque Converter (with lock-up clutch) |
| Outer Diameter | ~340 mm (13.4 in) |
| Mounting Bolt Pattern | 6-bolt flexplate configuration |
| Weight | ~18.5 kg (40.8 lbs) |
| Housing Material | High-strength steel with welded impeller vanes |
| OEM Reference | ZF 4168.028.168 |
| Seal Type | Integrated O-ring groove (compatible with 0634303928: O-RING) |
Compatibility
This torque converter assembly is specifically engineered for the ZF WG 100 Series of powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG211 series used in construction and agricultural equipment. The unit mates directly to the 4651301029: HOUSING and the 4651301024: HOUSING components within the bell housing assembly. Always verify the flexplate bolt pattern and pilot diameter before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Main structural casing that encloses the gear train and converter assembly |
| 4651301029 | HOUSING | Intermediate housing supporting the converter stator shaft |
| 0634303928 | O-RING | Seals the converter hub to prevent fluid leakage |
| 4651301024 | HOUSING | Rear housing section that aligns the output shaft |
| 4651203002 | SCREEN SHEET | Fine mesh filter protecting the converter circuit from debris |
| 4651303005 | SCREEN SHEET | Secondary filter screen for the lubrication circuit |
| 0636101032 | CAP SCREW | Fastener for securing the converter housing to the flexplate |
| 0630361028 | SEALING CAP | Covers the converter fill port to prevent contamination |
| 4475280060 | SCREW PLUG | Drain plug for the torque converter housing |
| 0634303312 | O-RING | Seals the screw plug to prevent fluid leaks |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
