Overview
The ZF 4166.035.137 CONVERTER Torque Converter Assembly is a complete, drop-in replacement unit engineered for the WG 200 Series transmission family. This critical component sits between the engine flywheel and the transmission input shaft, converting engine torque into hydraulic energy to drive the planetary gears. As a fully assembled unit, the SKU 4166.035.137 eliminates the need for internal disassembly, ensuring a precise fit and reliable lock-up performance in heavy-duty industrial applications. It is designed to withstand high thermal loads and continuous operation in off-highway machinery.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration: Worn internal clutches or stator bearings cause irregular power delivery, often felt as a low-frequency shake when the converter locks up.
- Transmission fluid overheating and darkening: A failing torque converter generates excessive heat due to internal slippage, leading to burnt-smelling oil and rapid degradation of the 0734319337 SHAFT SEAL.
- Delayed or harsh engagement when shifting from Neutral to Drive: Reduced hydraulic pressure within the converter assembly results in a noticeable lag or clunk, indicating the unit is losing its ability to transmit torque efficiently.
- Visible oil leaks near the bell housing: Cracks or seal failures in the converter housing allow transmission fluid to escape, often pooling under the vehicle and requiring immediate inspection of the 4460115043 HOUSING.
Technical Specifications
| Part Number | 4166.035.137 |
| Type | Complete Torque Converter Assembly |
| Diameter (Nominal) | 385 mm (15.2 in) |
| Weight | 18.5 kg (40.8 lbs) |
| Housing Material | High-strength cast iron |
| Impeller/Stator Material | Forged steel with hardened vanes |
| OEM Reference | ZF 4166.035.137 / WG200 Series |
| Torque Capacity | Up to 2,500 Nm (1,844 lb-ft) |
| Fluid Type | ZF TE-ML 03 or equivalent Dexron III |
Compatibility
This torque converter assembly is specifically designed for the ZF WG 200 Series transmissions, including the WG180, WG200, and WG210 models. It is also compatible with select WG 180 Series variants used in construction loaders, forklifts, and agricultural tractors. For proper installation, ensure the 4469315012 AXLE DRIVE HOUSING is free of debris and that the 0750117406 TAPER ROLLER BEARING and 0750117802 TAPERED ROLLER BEARING are inspected for wear before reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Encloses the torque converter and supports the input shaft |
| 4469315012 | AXLE DRIVE HOUSING | Houses the final drive gears and differential |
| 0750117406 | TAPER ROLLER BEARING | Supports radial and axial loads on the converter shaft |
| 0750117802 | TAPERED ROLLER BEARING | Provides smooth rotation for the turbine shaft |
| 0734319337 | SHAFT SEAL | Prevents fluid leakage at the converter hub |
| 0730161317 | WASHER | Thrust washer for axial clearance adjustment |
| 0730161451 | WASHER | Flat washer for bearing preload |
| 0730161452 | WASHER | Lock washer for fastener retention |
| 0730161453 | WASHER | Spacer washer for converter alignment |
| 0730161340 | WASHER | Sealing washer for hydraulic ports |
