Overview
The ZF 4166.041.011 CONVERTER Torque Converter Assembly is a complete, drop-in replacement unit engineered for the demanding environment of ZF WG 65 Series transmissions. This critical component sits between the engine flywheel and the transmission input shaft, functioning as a hydraulic coupling that multiplies engine torque while dampening driveline vibrations. The SKU 4166.041.011 ensures precise lock-up clutch engagement and smooth power transfer under heavy loads. When installed alongside a robust 4616101066: TRANSMISSION HOUSING, this converter assembly maintains optimal hydraulic pressure for consistent shift quality in construction and material handling equipment.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration — A worn 4166.041.011 unit often causes noticeable shuddering, especially when the lock-up clutch engages under load, indicating degraded friction material or failed stator bearings.
- Transmission overheating and fluid discoloration — Internal wear within the converter generates excessive heat, leading to burnt-smelling, dark transmission fluid and potential damage to the 0636011118: HEXAGON SCREW fasteners securing the housing.
- Delayed or harsh gear engagement — As the torque converter loses its ability to multiply torque effectively, operators experience a noticeable lag when shifting from neutral to drive or reverse, often accompanied by a hard clunk.
- Stall speed deviation from factory specifications — A failing converter will cause the engine to either stall too early or rev excessively high before the vehicle moves, signaling a loss of hydraulic efficiency within the assembly.
Technical Specifications
| Part Number | 4166.041.011 |
| Type | Complete Torque Converter Assembly |
| Overall Diameter | 385 mm (15.2 in) |
| Weight | 28.5 kg (62.8 lbs) |
| Housing Material | High-strength aluminum alloy with steel impeller |
| Lock-up Clutch | Wet, multi-plate friction disc |
| OEM Reference | ZF 4166.041.011 |
| Max Input Torque | 1,200 Nm (885 lb-ft) |
| Operating Temperature Range | -20°C to +120°C (-4°F to 248°F) |
Compatibility
This torque converter assembly is specifically designed for the ZF WG 65 Series, including the WG180, WG200, and WG210 transmission models. It is a direct fit for heavy-duty applications such as wheel loaders, forklifts, and industrial tractors. The 4166.041.011 unit integrates seamlessly with the 4616301307: HOUSING and the 4616301309: HOUSING components, ensuring proper alignment and sealing. Always verify your transmission serial number against ZF application charts to confirm compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Main structural casing for the transmission assembly |
| 0636011118 | HEXAGON SCREW | Fastener securing housing sections |
| 4616301307 | HOUSING | Intermediate housing for converter support |
| 4616301309 | HOUSING | Rear housing for torque converter cavity |
| 0636011038 | HEXAGON SCREW | Mounting bolt for converter assembly |
| 0636016015 | HEXAGON SCREW | High-torque fastener for bell housing |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for precise housing positioning |
| 0634313118 | O-RING | Hydraulic seal between converter and housing |
| 0636304019 | SCREW PLUG | Drain or inspection port plug |
| 0634801152 | SEALING RING | Static seal for fluid containment |
