Overview
The ZF 4166.037.077 CONVERTER Torque Converter Assembly is a complete, drop-in replacement unit engineered for the WG 260, WG 261, and WG 310 series transmissions. This critical component sits between the engine flywheel and the transmission input shaft, functioning as a fluid coupling that multiplies engine torque while dampening driveline vibrations. The SKU 4166.037.077 replaces worn or failed converters to restore smooth power transfer and prevent premature wear on the TRANSMISSION HOUSING and internal clutch packs. Designed for heavy-duty industrial applications, this assembly ensures reliable lock-up performance and thermal stability under sustained loads.
Symptoms of Failure
- Shuddering or vibration during acceleration: A failing torque converter causes noticeable shuddering, especially at low speeds or under load, as the lock-up clutch slips.
- Transmission fluid overheating: Worn internal bearings or stator failure leads to excessive heat generation, often indicated by a burnt smell or dashboard warning lights.
- Delayed or harsh gear engagement: When the converter fails to build proper hydraulic pressure, shifts become sluggish or abrupt, putting stress on the 螺栓 and mounting points.
- Torque converter drain plug leaks: Cracks in the housing or degraded seals cause fluid seepage around the SCREW PLUG, leading to low fluid levels and eventual transmission damage.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4166.037.077 |
| Product Type | Torque Converter Assembly (Complete Unit) |
| Outer Diameter | ~340 mm (estimated) |
| Overall Length | ~180 mm (estimated) |
| Weight | ~22 kg (48.5 lbs) |
| Housing Material | High-strength cast aluminum alloy |
| Impeller & Turbine Material | Heat-treated steel stampings |
| Stator Material | Reinforced composite or aluminum |
| Lock-up Clutch Type | Friction disc with damper springs |
| OEM Reference | ZF 4166.037.077 |
| Seal Compatibility | Use O-RING and SEALING CAP for proper installation |
Compatibility
This torque converter assembly is specifically designed for ZF WG series transmissions, including the WG 260, WG 261, and WG 310 models. It is also compatible with earlier WG 180 and WG 200 series when used with the correct 螺栓 kit. Always verify the bellhousing pattern and pilot bearing alignment before installation. The unit interfaces directly with the CONTROL UNIT and GEAR SHIFT HOUSING to ensure proper hydraulic flow and shift timing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101181 | TRANSMISSION HOUSING | Encloses and supports all transmission internals |
| 0636115293 | 螺栓 | Secures torque converter to flexplate |
| 0736300232 | 螺栓 | Mounts converter housing to transmission case |
| 4475280208 | SCREW PLUG | Seals torque converter drain port |
| 0634316523 | O-RING | Prevents fluid leaks at converter hub |
| 0630361026 | SEALING CAP | Protects converter pilot bore during shipping |
| 4646164014 | CONTROL UNIT | Manages lock-up clutch engagement timing |
| 4644306424 | GEAR SHIFT HOUSING | Houses shift valves and solenoids |
| 4644306427 | GASKET | Seals gear shift housing to transmission |
| 0732042025 | COMPRESSION SPRING | Provides damper force in lock-up clutch |
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