Overview
The ZF 4166.332.287 Turbine Wheel is a critical rotating component within the torque converter assembly of the WG 201 series transmission. This OEM genuine part, identified by SKU 4166.332.287, directly receives hydraulic fluid force from the impeller, converting it into mechanical torque to drive the transmission input shaft. Precision-balanced and manufactured to exacting ZF tolerances, this turbine wheel ensures smooth power transfer and optimal stall characteristics. It is commonly installed within the converter housing alongside the TRANSMISSION HOUSING and the TRANSMISSION HOUSING to maintain proper alignment and sealing integrity.
Symptoms of Failure
- Delayed or harsh engagement: When the turbine wheel blades become eroded or cracked, hydraulic coupling efficiency drops, causing noticeable lag when shifting from neutral to drive or reverse.
- Torque converter shudder: A vibration or shudder during light acceleration at low speeds often indicates a damaged turbine wheel that has lost its balance or blade profile.
- Overheating transmission fluid: A worn turbine wheel creates excessive fluid turbulence, generating heat that can be detected as burnt-smelling ATF or elevated temperature gauge readings.
- Loss of power under load: If the turbine wheel fails to maintain hydraulic lock-up, the vehicle will struggle to climb grades or accelerate, particularly at highway speeds.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4166.332.287 |
| Material | High-strength aluminum alloy with heat-treated hub |
| Outer Diameter | Approx. 280 mm (11.0 in) |
| Weight | 2.4 kg (5.3 lbs) |
| OEM Reference | ZF WG201 Series |
| Blade Count | 37 (staggered design) |
| Max Operating Temperature | 120°C (248°F) |
Compatibility
This turbine wheel is engineered specifically for the ZF WG 201 series, but it also serves as a direct replacement in the WG180 and WG200 transmission families due to shared torque converter architecture. It is compatible with all WG201 variants, including the WG201-1 and WG201-2 models. For proper installation, ensure the THREADED BUSH and SCREW PLUG are inspected and replaced as needed to prevent fluid bypass.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Encloses gear train and supports converter assembly |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG200 series |
| 4644301189 | THREADED BUSH | Provides wear-resistant thread for housing bolts |
| 4475280043 | SCREW PLUG | Seals hydraulic passages in the housing |
| 0634306198 | O-RING | Prevents fluid leaks between mating surfaces |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Fastens housing and cover assemblies |
| 0631610020 | SET SCREW | Secures adjustment positions on valve body |
| 0501218540 | BREATHER | Equalizes internal pressure and vents moisture |
