Overview
The ZF 4168.030.104 CONVERTER Torque Converter Assembly is a critical hydraulic component responsible for transferring engine torque to the transmission input shaft in ZF WG 180 series gearboxes. This complete unit replaces worn or damaged converters to restore smooth power delivery and prevent drivetrain slippage. The SKU 4168.030.104 is a direct-fit assembly that sits between the engine flywheel and the transmission housing, converting rotational force into hydraulic energy for seamless gear engagement. When installed alongside a TRANSMISSION HOUSING, this converter ensures proper alignment and oil flow within the system.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration, especially at low speeds, indicating worn internal clutch friction material.
- Delayed or harsh shifting between gears, often accompanied by a “slipping” sensation as the converter fails to lock up properly.
- Transmission fluid overheating and dark, burnt-smelling oil caused by excessive internal slippage and friction.
- Visible fluid leaks from the bell housing area, typically from a failed converter seal or cracked housing.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4168.030.104 |
| Type | Torque Converter Assembly (Complete Unit) |
| Overall Diameter | ~340 mm |
| Weight | ~18.5 kg |
| Housing Material | Cast Aluminum / Steel |
| OEM Reference | ZF 4168.030.104 |
| Torque Capacity | Up to 1,200 Nm |
Compatibility
This torque converter is specifically engineered for the ZF WG 180 Series transmission family, including models such as the WG180, WG200, and WG210. It is also compatible with certain variants of the ZF Ecomat 4HP and 5HP series that share the same bell housing pattern. Always verify the spline count and pilot bore diameter against your existing unit. For a complete rebuild, pair this converter with a new HOUSING, and ensure the TYPE PLATE is correctly affixed for identification. The GROOVED STUD is also required to secure the converter to the flywheel.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101080 | TRANSMISSION HOUSING | Encloses and supports transmission internals |
| 4644301333 | HOUSING | Secondary housing for valve body or converter |
| 0730365125 | TYPE PLATE | Identification plate with serial number |
| 0631311009 | GROOVED STUD | Fastener for converter-to-flywheel mounting |
| 0636305019 | SCREW PLUG | Seals oil passages in the housing |
| 4644301247 | THREADED BUSH | Provides threaded insert for mounting bolts |
| 0634303485 | O-RING | Seals converter-to-housing interface |
| 4644106055 | SHIFT SYSTEM | Controls gear selection and clutch actuation |
| 4642306050 | COVER PLATE | Protects internal components from debris |
| 4644306464 | GASKET | Prevents fluid leaks between mating surfaces |
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