Overview
The ZF 4168.034.117 CONVERTER Torque Converter Assembly is a critical hydraulic component that transfers engine torque to the transmission input shaft via fluid coupling. Positioned between the engine flywheel and the transmission pump, this complete unit modulates power delivery while multiplying torque during low-speed operation. The SKU 4168.034.117 is engineered as a direct-fit replacement for heavy-duty ZF transmissions, ensuring seamless integration with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain proper alignment and oil flow.
Symptoms of Failure
When the ZF 4168.034.117 torque converter wears out, operators may notice delayed engagement or shuddering during acceleration, often caused by degraded stator bearings. Another common failure sign is transmission fluid overheating with a burnt smell, indicating internal clutch slippage. Intermittent gear slipping under load can occur when the converter fails to maintain hydraulic pressure. Finally, visible ATF leaks near the bell housing often point to a cracked converter hub or failed seal, requiring immediate replacement of this complete unit.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4168.034.117 |
| Type | Complete Torque Converter Assembly |
| Material | High-strength steel housing with aluminum impeller |
| Weight | Approx. 18.5 kg (40.8 lbs) |
| Diameter | 340 mm (13.4 in) |
| OEM Reference | ZF 4168.034.117 |
| Seal Compatibility | 0634313514: O-RING |
| Mounting Hardware | 0636100803: CAP SCREW |
Compatibility
This torque converter assembly is designed for ZF WG 171, WG 190, WG 191, WG 210, and WG 211 series transmissions. It also fits select WG 180 and WG 200 models when used with the correct SCREEN SHEET and TUBE for oil filtration. Always verify your transmission model before ordering, as variations in bolt patterns exist between series.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101030 | TRANSMISSION HOUSING | Encloses gear train and supports torque converter |
| 4656301066 | HOUS.FRONT SECT | Front section aligning converter with pump |
| 4656201015 | SCREEN SHEET | Filters debris from converter oil flow |
| 4656301037 | TUBE | Oil passage tube between converter and cooler |
| 0634313514 | O-RING | Seals converter-to-housing connection |
| 0636100803 | CAP SCREW | Fastens converter to flexplate |
| 4656301064 | HOUSING REAR PART | Rear housing supporting output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for converter assembly |
| 0636100801 | CAP SCREW | Mounting bolt for converter cover |
| 0636100160 | CAP SCREW | Secures stator support to housing |
Frequently Asked Questions
Q: Can I install the ZF 4168.034.117 without replacing the transmission housing?
A: Yes, but inspect the TRANSMISSION HOUSING for cracks or wear. A damaged housing can cause misalignment and premature converter failure.
Q: What is the typical lifespan of this torque converter assembly?
A: With proper maintenance and clean fluid, the 4168.034.117 can last 150,000–200,000 miles. Overheating or contaminated oil significantly reduces service life.
Q: Do I need to replace the O-ring and cap screws when installing this unit?
A: Yes. Always install a new 0634313514: O-RING and 0636100803: CAP SCREW to prevent leaks and ensure proper torque retention.
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