Overview
The ZF 4168.028.183 CONVERTER Torque Converter Assembly is a critical hydraulic coupling unit designed for the WG 100 Series transmission family. This complete assembly transfers engine torque to the transmission input shaft while multiplying rotational force during low-speed operation. Located between the engine flywheel and the transmission housing, this SKU 4168.028.183 unit contains a lock-up clutch, stator, and turbine assembly that modulates power delivery in heavy-duty industrial applications. Proper function of this torque converter ensures smooth gear engagement and prevents driveline shock in ZF powertrains.
Symptoms of Failure
- Transmission shudder or vibration at low speeds — Worn stator bearings or damaged turbine fins cause irregular fluid flow, producing noticeable shaking during acceleration from a stop.
- Delayed or harsh gear engagement — Internal seal degradation leads to pressure loss, resulting in a lag when shifting from Neutral to Drive or Reverse.
- Overheating transmission fluid with burnt odor — A failing lock-up clutch generates excessive friction, raising fluid temperatures above normal operating ranges and causing thermal breakdown.
- Audible whining or grinding noise from bell housing — Worn needle bearings or impeller damage create metallic sounds that intensify with engine RPM.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4168.028.183 |
| Assembly Type | Complete Torque Converter Unit |
| Overall Diameter | 385 mm (15.2 in) |
| Overall Height | 210 mm (8.3 in) |
| Dry Weight | 18.5 kg (40.8 lbs) |
| Housing Material | Cast Aluminum Alloy |
| Impeller Material | Heat-Treated Steel |
| Lock-Up Clutch Type | Hydraulic Piston |
| OEM Reference | ZF 4168.028.183 |
Compatibility
This torque converter assembly is engineered for ZF WG 100 Series transmissions, including models such as WG180, WG200, and WG250. It is also compatible with select WG 120 and WG 150 variants used in construction equipment, agricultural tractors, and material handling vehicles. Always verify your transmission model code before installation.
Related Components
During installation, inspect and replace adjacent components to ensure optimal performance. The 4651101007 TRANSMISSION HOUSING encloses the converter assembly, while the 4651301029 HOUSING provides structural support. Use a new 0634303928 O-RING to seal the converter-to-housing interface, and verify the condition of the 4651301024 HOUSING for cracks or wear.
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Encloses torque converter and gearset |
| 4651301029 | HOUSING | Rear support housing for converter |
| 0634303928 | O-RING | Seals converter-to-housing joint |
| 4651301024 | HOUSING | Intermediate housing adapter |
| 4651203002 | SCREEN SHEET | Fluid filter screen for converter circuit |
| 4651303005 | SCREEN SHEET | Secondary fluid filtration element |
| 0636101032 | CAP SCREW | Fastener for housing mounting |
| 0630361028 | SEALING CAP | Protects converter drain port |
| 4475280060 | SCREW PLUG | Seals converter test port |
| 0634303312 | O-RING | Seals screw plug interface |
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