Overview
The ZF 4168.028.382 CONVERTER Torque Converter Assembly is a critical hydraulic coupling component that transfers engine torque to the transmission input shaft within the WG 94 Series powertrain. This complete unit, identified by SKU 4168.028.382, sits between the engine flywheel and the transmission housing, utilizing a lock-up clutch and stator assembly to multiply torque during low-speed operation. As a sealed, factory-balanced assembly, it ensures smooth power delivery and prevents torsional vibrations from reaching the gear train. The converter interfaces directly with the 4661101037 TRANSMISSION HOUSING and the 4661301099 HOUSING II, forming the primary power flow path.
Symptoms of Failure
- Torque converter shudder or vibration during lock-up: A worn stator clutch or damaged turbine fins cause noticeable shaking when the converter engages, especially under load.
- Transmission fluid overheating and dark discoloration: Internal slippage from a failed converter generates excessive heat, leading to burnt fluid and potential damage to the 0631306174 CYLINDRICAL PIN alignment.
- Delayed or harsh gear engagement: A failing impeller or pump drive hub reduces hydraulic pressure, causing a lag when shifting from Park to Drive or Reverse.
- Whining or grinding noise from the bell housing area: Worn bearings or a cracked converter cover produce audible metallic sounds that intensify with engine RPM.
Technical Specifications
| Part Number | 4168.028.382 |
| Assembly Type | Complete Torque Converter (Lock-up) |
| Outer Diameter | 385 mm (15.16 in) |
| Overall Height | 210 mm (8.27 in) |
| Pilot Diameter | 55 mm (2.17 in) |
| Material | Steel housing with aluminum turbine & stator |
| Dry Weight | 18.5 kg (40.8 lbs) |
| OEM Reference | ZF 4168.028.382 |
| Fluid Capacity | 1.8 liters (0.48 gal) |
Compatibility
This torque converter assembly is engineered for the WG 94 Series of ZF industrial transmissions. It is directly compatible with the following models: WG180, WG200, WG210, and WG250. These transmissions are commonly found in heavy-duty forklifts, wheel loaders, and mobile cranes. The converter mounts to the engine flexplate and mates with the 4661101037 TRANSMISSION HOUSING and the 4661301099 HOUSING II. Always verify the pilot bore and bolt pattern against your specific transmission serial number before installation. The 0769123894 TYPE PLATE on the transmission housing provides the exact model identification for cross-referencing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101037 | TRANSMISSION HOUSING | Main structural casing for gear sets and shafts |
| 4661301099 | HOUSING II | Rear housing supporting output shaft and bearings |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing-to-converter positioning |
| 0769123894 | TYPE PLATE | Identification plate with transmission model and serial number |
| 0750100022 | SCREW PLUG | Seals fluid passages in the valve body |
| 4660201008 | SCREW PLUG | Closes oil gallery in the housing |
| 0636100117 | SCREW PLUG | Drain or fill plug for transmission sump |
| 0501211384 | VALVE | Hydraulic control valve for shift modulation |
| 0732042156 | COMPRESSION SPRING | Returns valve spool to neutral position |
| 0768409154 | SCREW PLUG | Seals pressure test ports |
