Overview
The ZF 4166.030.101 CONVERTER Torque Converter Assembly is a critical hydraulic component that transfers and multiplies engine torque to the transmission input shaft within the WG 200 Series. This complete unit replaces the original torque converter, ensuring smooth power delivery and load-sensing performance in heavy-duty industrial drivetrains. The SKU 4166.030.101 is precision-engineered to match OEM specifications, integrating directly with the 4644101222: TRANSMISSION HOUSING and the 4644301226: TRANSMISSION HOUSING to maintain proper alignment and fluid sealing. This assembly is essential for maintaining hydraulic lock-up and preventing torque loss during high-load operations.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration – A worn 4166.030.101 unit often causes noticeable shuddering, especially when shifting from low to high gear under load.
- Delayed engagement or slipping in forward/reverse – Internal stator or turbine wear leads to fluid cavitation, resulting in sluggish response and gear slippage.
- Dark, burnt transmission fluid with metallic debris – Friction material breakdown inside the converter contaminates the fluid, often accompanied by a burnt odor and visible particles.
- Overheating transmission with erratic lock-up – A failing torque converter fails to maintain proper lock-up pressure, causing the transmission to run hot and cycle unpredictably.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4166.030.101 |
| Assembly Type | Complete Torque Converter Unit |
| Outer Diameter | ~340 mm (estimated) |
| Overall Height | ~180 mm (estimated) |
| Material | High-strength steel housing with hardened stator |
| Weight | ~18.5 kg (estimated) |
| OEM Reference | ZF 4166.030.101 |
| Fluid Capacity | ~2.8 liters (estimated) |
Compatibility
This torque converter assembly is designed primarily for ZF WG 200 Series transmissions, including the WG180, WG200, and WG210 variants. It also fits select WG 180 Series units where the bell housing and input shaft dimensions match. For proper installation, verify that the 0730365067: TYPE PLATE on your transmission confirms the series, and use the 0631311009: GROOVED STUD to secure the converter to the flywheel. Always cross-reference your transmission model with the original equipment specifications before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101222 | TRANSMISSION HOUSING | Encloses and supports the torque converter assembly |
| 4644301226 | TRANSMISSION HOUSING | Alternate housing variant for WG 200 series |
| 0730365067 | TYPE PLATE | Identifies transmission model and serial number |
| 0631311009 | GROOVED STUD | Secures converter to flywheel |
| 4644301298 | COVER PLATE | Protects converter access opening |
| 0634306525 | O-RING | Seals converter-to-housing interface |
| 0636305026 | SCREW PLUG | Closes fluid drain or test ports |
| 4475280078 | ADAPTER | Connects converter to pump drive |
| 4644301279 | SCREEN SHEET | Filters debris from converter fluid |
| 4644301088 | SEALING CAP | Prevents fluid leakage from converter hub |
