Overview
The ZF 4168.030.043 CONVERTER Torque Converter Assembly is a critical hydraulic coupling unit designed for the WG 150 Series transmission family. This complete assembly transfers engine torque to the transmission input shaft while multiplying power during low-speed operation. The SKU 4168.030.043 is a direct-fit replacement that integrates with the 4642101109 TRANSMISSION HOUSING and the 4642301205 TRANSMISSION HOUSING to ensure proper alignment and fluid sealing. Positioned between the engine flywheel and the transmission pump, this converter assembly is essential for smooth power delivery and drivetrain longevity.
Symptoms of Failure
- Transmission shudder or vibration during acceleration — A worn torque converter can cause noticeable shaking, especially when the converter lockup clutch fails to engage properly.
- Delayed or harsh gear engagement — If the converter fails to build adequate hydraulic pressure, you may experience a lag when shifting from Park to Drive or Reverse.
- Overheating transmission fluid — A slipping converter generates excessive heat, leading to burnt-smelling fluid and potential damage to internal seals.
- Whining or grinding noises from the bell housing — Worn bearings or damaged stator components produce audible sounds that intensify with engine RPM.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4168.030.043 |
| Assembly Type | Complete Torque Converter Unit |
| Outer Diameter | ~340 mm (13.4 in) |
| Weight | ~18.5 kg (40.8 lbs) |
| Material | Cast steel housing with hardened turbine hub |
| OEM Reference | ZF 4168.030.043 |
| Lockup Clutch | Integrated hydraulic lockup |
| Fluid Capacity | ~1.2 liters (0.32 gal) |
Compatibility
This converter assembly is engineered for the ZF WG 150 Series transmissions. It is also compatible with the following ZF models that share the same bell housing and pump interface: WG 180, WG 200, and WG 250. Always verify the pilot diameter and flexplate bolt pattern before installation. The unit works in conjunction with the 0730365125 TYPE PLATE for proper identification and the 0631311009 GROOVED STUD for secure mounting to the flywheel.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses and supports the torque converter assembly |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for specific WG models |
| 0730365125 | TYPE PLATE | Identification plate for transmission model and specs |
| 0631311009 | GROOVED STUD | Mounting stud for converter-to-flywheel connection |
| 4642301168 | SCREEN SHEET | Filter screen for transmission fluid intake |
| 4642301169 | SCREEN SHEET | Secondary filter screen for hydraulic circuit |
| 0636100621 | HEXAGON SCREW | Fastener for housing and cover plate attachment |
| 4642301186 | SCREEN SHEET | Fine mesh screen for valve body protection |
| 4644106300 | SHIFT SYSTEM | Controls gear selection and hydraulic modulation |
| 4644306500 | COVER PLATE | Seals the converter access opening on the housing |
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