Overview
The ZF 4166.030.147 CONVERTER Torque Converter Assembly | Complete Unit is a critical hydraulic component that transfers and multiplies engine torque to the transmission input shaft. Located between the engine flywheel and the gearbox, this SKU 4166.030.147 serves as the primary coupling device in the WG 150 Series powertrain. It houses the impeller, turbine, and stator assembly, enabling smooth power delivery during vehicle startup and load changes. When paired with a robust TRANSMISSION HOUSING, this converter ensures optimal fluid coupling and reduces driveline shock. The complete unit is engineered for direct bolt-on replacement, eliminating the need for core exchange.
Symptoms of Failure
- Torque converter shudder or vibration during low-speed acceleration, often felt as a rhythmic shaking in the cab. This indicates worn clutch friction material or damaged stator bearings.
- Delayed or harsh engagement when shifting from neutral to drive or reverse, accompanied by a noticeable lag. This points to internal seal degradation or pump cavitation.
- Transmission fluid overheating with persistent “check trans temp” warnings, caused by a locked-up stator or failed one-way clutch that prevents proper fluid circulation.
- Audible whining or grinding noise from the bell housing area, especially at idle, signaling worn needle bearings or impeller blade damage.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4166.030.147 |
| Assembly Type | Complete Torque Converter (Lock-up capable) |
| Overall Diameter | 385 mm (15.2 in) |
| Pilot Diameter | 55 mm |
| Mounting Bolt Pattern | 6 x M10 x 1.5 on 140 mm PCD |
| Dry Weight | 18.5 kg (40.8 lbs) |
| Housing Material | High-strength aluminum alloy (A356-T6) |
| Impeller Blade Count | 29 |
| Stator Spline Count | 27 |
| OEM Reference | ZF 4166.030.147 / 4166030147 |
| Fluid Capacity | 2.8 liters (ATF Dexron III) |
Compatibility
This torque converter assembly is specifically designed for the ZF WG 150 Series transmission family. It is directly compatible with the following ZF models: WG150, WG180, and WG200 (when used with the appropriate bell housing adapter). The unit also fits select WG120 variants with a 385 mm flywheel. For proper installation, ensure your transmission uses the corresponding TRANSMISSION HOUSING and that the TYPE PLATE confirms the series. Secure the assembly using the correct GROOVED STUD kit for vibration resistance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101047 | TRANSMISSION HOUSING | Encloses gear train and converter assembly |
| 4642301207 | TRANSMISSION HOUSING | Alternate housing for WG150 series |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Fastener for converter-to-flexplate mounting |
| 4642301168 | SCREEN SHEET | Filter mesh for transmission oil sump |
| 4642301169 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 0636100621 | HEXAGON SCREW | Mounting bolt for converter housing |
| 4642301186 | SCREEN SHEET | Secondary oil strainer |
| 4644106300 | SHIFT SYSTEM | Valve body and shift control assembly |
| 4644306500 | COVER PLATE | Protective cover for converter access |
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