Overview
The ZF 4166.032.140 CONVERTER Torque Converter Assembly is a critical hydraulic coupling unit designed for the WG 201 Series transmission family. This complete assembly transfers engine torque to the transmission input shaft through fluid coupling, providing smooth power delivery and torque multiplication during vehicle startup. The SKU 4166.032.140 is a direct replacement for worn or failed converters, ensuring optimal driveline performance. It sits between the engine flywheel and the transmission pump, converting rotational energy into hydraulic pressure to drive the gear train. When paired with a robust 4644101160: TRANSMISSION HOUSING, this converter maintains precise alignment and sealing under high-load conditions.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration, often described as a “chattering” sensation when the lockup clutch engages.
- Transmission fluid overheating with visible discoloration or burnt smell, indicating internal stator or clutch pack wear.
- Delayed or harsh gear engagement when shifting from Park to Drive or Reverse, caused by insufficient hydraulic pressure from a failing impeller.
- Audible whining or grinding noises from the bell housing area, particularly at idle or low RPM, signaling bearing or bushing degradation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4166.032.140 |
| Assembly Type | Complete Torque Converter (with lockup clutch) |
| Outer Diameter | ~340 mm (13.4 in) |
| Weight | ~18.5 kg (40.8 lbs) |
| Material | High-strength steel housing with aluminum impeller |
| OEM Reference | ZF 4166.032.140 |
| Fluid Capacity | ~2.8 liters (0.74 gal) |
| Max Torque Rating | 1,200 Nm (885 lb-ft) |
Compatibility
This torque converter assembly is engineered for the ZF WG 201 Series transmissions, including models WG180, WG200, and WG210. It is also compatible with select variants of the WG 211 and WG 220 series used in medium-duty trucks, construction equipment, and agricultural machinery. For proper installation, ensure the transmission housing is in good condition; consider replacing the 4644301323: TRANSMISSION HOUSING if cracks or warping are present. Additionally, the 4644301189: THREADED BUSH and 4475280043: SCREW PLUG should be inspected during converter replacement to prevent fluid leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Encloses and aligns the torque converter and gear train |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 4644301189 | THREADED BUSH | Provides threaded mounting point for housing bolts |
| 4475280043 | SCREW PLUG | Seals fluid passages in the housing |
| 0634306198 | O-RING | Prevents fluid leaks at housing joints |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 4644301161 | COVER PLATE | Protects converter access opening |
| 0636100621 | HEXAGON SCREW | Fastens cover plate to housing |
| 0631610020 | SET SCREW | Locks threaded bush in position |
| 0501218540 | BREATHER | Equalizes internal pressure in the housing |
