Overview
The ZF 4166.035.176 CONVERTER Torque Converter Assembly is a complete, drop-in replacement unit designed to transfer and multiply engine torque within ZF WG 200 and WG 201 series transmissions. This critical hydraulic component sits between the engine flywheel and the transmission input shaft, using fluid coupling to smooth power delivery and provide torque multiplication during launch and low-speed operation. The SKU 4166.035.176 replaces worn or damaged converters to restore driveline efficiency and prevent premature wear on adjacent components such as the 4644101222: TRANSMISSION HOUSING and the 4644301226: TRANSMISSION HOUSING.
Symptoms of Failure
- Shuddering or vibration during acceleration: A failing torque converter often causes noticeable shuddering, especially when climbing grades or under heavy load, indicating worn clutch linings or damaged stator bearings.
- Transmission fluid overheating and darkening: Internal slippage generates excessive heat, leading to burnt-smelling, dark fluid and potential damage to the 0631311009: GROOVED STUD and sealing surfaces.
- Delayed or harsh engagement from Park to Drive/Reverse: Worn converter impeller vanes reduce hydraulic pressure, causing a noticeable lag or jarring shift when selecting gears.
- Audible whining or grinding noise from the bell housing: Mechanical wear inside the converter produces a high-pitched whine that changes with engine RPM, often accompanied by metal particles in the fluid.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4166.035.176 |
| Type | Complete Torque Converter Assembly |
| Outer Diameter | ~340 mm (estimated) |
| Overall Length | ~180 mm (estimated) |
| Weight | ~14.5 kg (32 lbs) |
| Housing Material | Cast Aluminum / Steel Impeller |
| OEM Reference | ZF 4166.035.176 |
| Fluid Capacity | ~1.2 liters (estimated) |
Compatibility
This torque converter assembly is specifically engineered for ZF WG 200 and WG 201 series transmissions, including models such as WG180, WG200, WG201, and WG211. It is also compatible with select ZF 4WG-200 and 5WG-200 variants used in industrial and off-highway applications. Always verify the 0730365067: TYPE PLATE on your transmission to confirm exact fitment before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101222 | TRANSMISSION HOUSING | Encloses gear train and converter assembly |
| 4644301226 | TRANSMISSION HOUSING | Rear housing for output shaft support |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Locating dowel for housing alignment |
| 4644301298 | COVER PLATE | Seals converter access opening |
| 0634306525 | O-RING | Hydraulic seal for converter circuit |
| 0636305026 | SCREW PLUG | Drain/fill port for transmission fluid |
| 4475280078 | ADAPTER | Converter-to-pump drive interface |
| 4644301279 | SCREEN SHEET | Filter screen for converter oil supply |
| 4644301088 | SEALING CAP | Protects converter hub during transport |
