Overview
The ZF 4168.028.146 CONVERTER Torque Converter Assembly is a complete, drop-in replacement unit engineered for the WG 100 Series transmission family. This critical component sits between the engine flywheel and the transmission input shaft, functioning as a hydraulic coupling that multiplies engine torque while dampening driveline vibrations. The SKU 4168.028.146 represents a fully assembled torque converter, eliminating the need for disassembly or core exchange. In the WG 100 Series architecture, this unit directly interfaces with the 4651101007: TRANSMISSION HOUSING and the 4651301029: HOUSING, ensuring precise alignment and hydraulic sealing for optimal power transfer.
Symptoms of Failure
- Shuddering or vibration during acceleration: A worn torque converter fails to lock up properly, causing noticeable driveline shudder at highway speeds.
- Transmission fluid overheating: Internal stator clutch slippage generates excessive heat, often indicated by a burning smell or dashboard warning lights.
- Delayed or harsh gear engagement: When the converter fails to build hydraulic pressure, shifting from Park to Drive or Reverse becomes sluggish or abrupt.
- Torque converter drain-back noise: A whining or grinding sound from the bell housing area, especially when the vehicle is cold, signals worn bearings or impeller damage.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4168.028.146 |
| Assembly Type | Complete Torque Converter (Stator, Turbine, Impeller) |
| Overall Diameter | ~340 mm (13.4 in) |
| Weight | ~18.5 kg (40.8 lbs) |
| Housing Material | High-strength cast aluminum with steel hub |
| OEM Reference | ZF 4168.028.146 |
| Fluid Capacity | ~1.2 liters (0.32 gal) |
| Bolt Pattern | 6-bolt flexplate mounting (M10 x 1.5) |
Compatibility
This torque converter assembly is specifically designed for ZF WG 100 Series transmissions, including models WG180, WG200, and WG210. It is also compatible with select WG 150 Series variants used in industrial material handling and construction equipment. The unit requires proper installation with a new 0634303928: O-RING at the pump interface and must be aligned with the 4651301024: HOUSING to prevent fluid bypass. Always verify your transmission model number against the ZF parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Main structural casing for gear train and valve body |
| 4651301029 | HOUSING | Torque converter bell housing adapter |
| 0634303928 | O-RING | Seals converter-to-pump oil passage |
| 4651301024 | HOUSING | Intermediate housing for PTO mounting |
| 4651203002 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4651303005 | SCREEN SHEET | Coarse debris screen for sump return |
| 0636101032 | CAP SCREW | M10 fastener for housing assembly |
| 0630361028 | SEALING CAP | Plugs unused hydraulic ports |
| 4475280060 | SCREW PLUG | Drain plug for torque converter housing |
| 0634303312 | O-RING | Seals screw plug to prevent leaks |
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