Overview
The ZF 4166.339.261 TURBINE HUB is a precision-machined component located within the torque converter assembly of the WG 65 Series transmission. This hub serves as the central rotational interface, transferring hydraulic torque from the turbine blades to the input shaft. As an OEM genuine part, SKU 4166.339.261 ensures exact fitment and metallurgical integrity, preventing premature wear in high-stress applications. It is typically mounted directly behind the stator support and is critical for maintaining proper fluid coupling efficiency.
Symptoms of Failure
- Delayed engagement or “turbine shudder” during acceleration: When the hub splines wear, the turbine can slip, causing a noticeable vibration or hesitation when shifting from neutral to drive.
- Low stall speed or erratic RPM rise: A worn hub can alter the torque converter’s hydraulic balance, leading to a lower-than-specified stall speed or surging RPM under load.
- Metallic debris in transmission fluid: Friction from a failing hub generates fine metal particles, often visible during a fluid change or filter inspection.
- Oil leaks near the bell housing: Cracks or wear on the hub’s sealing surface can allow ATF to escape, leaving puddles under the vehicle.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4166.339.261 |
| Material | Case-hardened steel (DIN 1.7131) |
| Outer Diameter | 135 mm |
| Inner Spline Diameter | 28 mm |
| Overall Height | 62 mm |
| Weight | 1.45 kg |
| OEM Reference | ZF 4166.339.261 |
Compatibility
This turbine hub is engineered for the ZF WG65 series, including models such as the WG180, WG200, and WG210. It is also compatible with select WG150 variants that share the same torque converter architecture. Always verify the spline count and pilot diameter against your specific transmission model before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Encloses the gearset and supports the torque converter assembly |
| 0636011038 | HEXAGON SCREW | Secures the turbine hub to the turbine shell |
| 0636011118 | HEXAGON SCREW | Fastens the stator support to the pump housing |
| 0636016015 | HEXAGON SCREW | Mounts the transmission housing to the bell housing |
| 0631306085 | CYLINDRICAL PIN | Aligns the turbine hub during assembly |
| 0634313118 | O-RING | Seals the hub-to-turbine interface |
| 0636304019 | SCREW PLUG | Closes the oil passage in the hub |
| 0634801152 | SEALING RING | Prevents fluid bypass around the hub |
| 0732611049 | FILTER INSERT | Captures debris from hub wear |
| 0634303718 | O-RING | Seals the hub-to-input shaft connection |
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