Overview
The ZF 4166.030.046 CONVERTER Torque Converter Assembly is a complete, drop-in replacement unit engineered for the WG 150 Series transmission family. This critical hydraulic component sits between the engine flywheel and the transmission input shaft, multiplying engine torque and providing a fluid coupling that dampens driveline shock. As a complete assembly, the SKU 4166.030.046 includes the impeller, turbine, stator, and lock-up clutch, eliminating the need for partial rebuilds. When paired with a robust TRANSMISSION HOUSING or a compatible TRANSMISSION HOUSING, this converter ensures optimal power transfer for heavy-duty industrial applications.
Symptoms of Failure
- Shudder or vibration during lock-up: A worn torque converter clutch causes noticeable shudder when the converter locks at highway speeds, often described as “torque converter shudder” in search queries.
- Delayed or harsh engagement: If the converter fails to build hydraulic pressure, operators experience a significant lag between shifting from Neutral to Drive, or a jarring engagement.
- Overheating transmission fluid: A slipping stator or failed one-way clutch generates excessive heat, leading to burnt-smelling fluid and dashboard temperature warnings.
- Whining or grinding noise from bell housing: Worn bearings inside the 4166.030.046 produce a metallic whine that changes with engine RPM, often mistaken for pump failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4166.030.046 |
| Assembly Type | Complete Torque Converter (Lock-up Clutch Included) |
| Overall Diameter | 340 mm (13.4 in) |
| Pilot Diameter | 45 mm (1.77 in) |
| Weight (Dry) | 14.5 kg (32.0 lbs) |
| Housing Material | High-Strength Steel / Aluminum Impeller |
| OEM Reference | ZF 4166.030.046 / WG 150 Series |
| Fluid Capacity | Approx. 1.8 Liters (0.48 gal) |
Compatibility
This converter assembly is specifically designed for the ZF WG 150 Series, but it also fits select variants of the WG 180 and WG 200 transmissions when used with the correct bell housing adapter. It is a direct replacement for units requiring the 4166.030.046 stamp. Always verify the pilot bore depth and flexplate bolt pattern. For identification, ensure the TYPE PLATE on your transmission matches the WG 150 designation. Secure the converter to the flexplate using a GROOVED STUD for proper alignment and torque retention.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses the gear train and converter assembly |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing for WG 150 variants |
| 0730365125 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Flexplate-to-converter mounting stud |
| 4642301168 | SCREEN SHEET | Oil filter screen for converter circuit |
| 4642301169 | SCREEN SHEET | Fine mesh screen for hydraulic control |
| 0636100621 | HEXAGON SCREW | Fastener for housing assembly |
| 4642301186 | SCREEN SHEET | Secondary oil strainer |
| 4644106231 | SHIFT SYSTEM | Hydraulic shift control module |
| 4644306470 | GASKET | Seal between converter housing and transmission |
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