Overview
The ZF 4166.030.107 CONVERTER Torque Converter Assembly is a critical hydraulic component that transfers engine torque to the transmission input shaft via fluid coupling. Positioned between the flexplate and the transmission pump, this complete unit modulates power delivery and multiplies torque during launch. The SKU 4166.030.107 is a direct replacement for the WG 150 Series, ensuring seamless integration with the transmission housing. When paired with a properly sealed TRANSMISSION HOUSING, this converter assembly maintains precise hydraulic pressure for smooth shifting.
Symptoms of Failure
- Shuddering or vibration during acceleration: Worn internal clutches or damaged stator vanes cause torque converter shudder, especially at low speeds.
- Delayed or harsh engagement: A failing converter fails to lock up properly, resulting in a noticeable lag when shifting from Park to Drive or Reverse.
- Transmission fluid contamination: Internal wear generates metallic debris, which can clog the SCREEN SHEET and reduce hydraulic efficiency.
- Overheating transmission: Slipping converter generates excessive heat, often indicated by burnt-smelling fluid or dashboard warning lights.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4166.030.107 |
| Assembly Type | Complete Torque Converter (Lock-up capable) |
| Outer Diameter | ~320 mm (estimated) |
| Weight | ~14.5 kg (32 lbs) |
| Material | Steel housing with sintered bronze bearings |
| OEM Reference | ZF 4166.030.107 |
| Fluid Capacity | ~1.2 liters (ATF) |
Compatibility
This torque converter is engineered for the ZF WG 150 Series transmissions. It is also compatible with select models in the WG 180 and WG 200 families, provided the transmission housing and adapter plate match. For proper installation, verify that the TRANSMISSION HOUSING is free of cracks and that the GROOVED STUD is torqued to specification. Always replace the TYPE PLATE to ensure correct identification for future service.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Encloses gearset and converter assembly |
| 4642301208 | TRANSMISSION HOUSING | Alternative housing variant for WG series |
| 0730365125 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Secures converter to flexplate |
| 4642301168 | SCREEN SHEET | Filters debris from hydraulic circuit |
| 4642301169 | SCREEN SHEET | Fine-mesh filter for high-flow systems |
| 0636100621 | HEXAGON SCREW | Mounting fastener for housing |
| 0630361029 | SEALING CAP | Prevents fluid leaks at test ports |
| 4642306254 | ADAPTER | Aligns converter to pump input shaft |
| 0634303340 | O-RING | Seals converter-to-housing interface |
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