Overview
The ZF 4166.035.210 CONVERTER Torque Converter Assembly is a critical hydraulic coupling unit that transfers engine torque to the transmission input shaft within the WG 200 Series. As a complete unit, this SKU 4166.035.210 replaces the entire torque converter assembly, including the impeller, turbine, stator, and lock-up clutch components. It sits between the engine flywheel and the transmission pump, modulating power delivery to prevent engine stall and multiply torque during low-speed operation. This assembly is essential for smooth gear engagement and efficient power transmission in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 4166.035.210 torque converter begins to fail, operators often notice specific performance issues. Shuddering during acceleration is a common early indicator, typically caused by worn clutch friction material or contaminated transmission fluid. Delayed engagement or gear slipping occurs when the converter fails to maintain proper hydraulic pressure, leading to sluggish starts and erratic shifting. Overheating transmission fluid is another critical symptom, often resulting from a failing stator or blocked internal passages. Additionally, low-speed surging—where the engine revs without proportional vehicle movement—signals internal wear or a damaged one-way clutch assembly.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4166.035.210 |
| Assembly Type | Complete Torque Converter Unit |
| Overall Diameter | ~340 mm (13.4 in) |
| Overall Length | ~180 mm (7.1 in) |
| Weight | ~22 kg (48.5 lbs) |
| Housing Material | Cast Aluminum Alloy |
| Impeller Material | Heat-Treated Steel |
| OEM Reference | ZF 4166.035.210 |
| Lock-Up Clutch | Integrated Friction Disc |
Compatibility
This torque converter assembly is designed for ZF WG 200 Series transmissions, including models such as the WG180, WG200, and WG210. It is also compatible with certain variants of the ZF 4WG-200 and 5WG-200 series used in construction equipment, agricultural machinery, and material handling vehicles. Always verify the transmission serial number and housing configuration before installation. For proper mounting, ensure the 4644101178: TRANSMISSION HOUSING and 4644301223: TRANSMISSION HOUSING are in good condition. The 0730365067: TYPE PLATE provides critical identification data, while the 0631311009: GROOVED STUD secures the converter to the flywheel assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101178 | TRANSMISSION HOUSING | Encloses and supports transmission internals |
| 4644301223 | TRANSMISSION HOUSING | Alternative housing for specific WG models |
| 0730365067 | TYPE PLATE | Identification plate for transmission specs |
| 0631311009 | GROOVED STUD | Mounting stud for converter attachment |
| 4644303060 | COVER PLATE | Protective cover for converter access |
| 4644303061 | COVER PLATE | Alternate cover plate variant |
| 0634306525 | O-RING | Seal for hydraulic fluid passages |
| 0636305026 | SCREW PLUG | Threaded plug for drain or fill ports |
| 0501316470 | BREATHER | Ventilation valve for pressure equalization |
| 4644301279 | SCREEN SHEET | Filter screen for fluid contamination |
