Overview
The ZF 4642.262.003 STATOR is a critical hydraulic component engineered specifically for the WG 200 Series transmission family. Positioned between the pump and turbine within the torque converter assembly, this OEM genuine part redirects fluid flow to multiply torque during initial acceleration and lock-up phases. The stator, identified by SKU 4642.262.003, features precision-machined blades that optimize fluid dynamics, ensuring efficient power transfer from the engine to the gearbox. Without a properly functioning stator, the transmission cannot achieve its designed stall speed or fuel economy targets.
Symptoms of Failure
- Torque converter shudder at low speeds: A worn 4642.262.003 stator often causes a noticeable vibration or shudder when accelerating from a stop, as the one-way clutch inside the stator fails to hold properly.
- Delayed or harsh engagement: If the stator blades are damaged or the internal sprag clutch slips, you may experience a significant lag when shifting from Neutral to Drive or Reverse, accompanied by a hard engagement.
- Overheating transmission fluid: A seized or failing stator restricts fluid circulation, leading to rapid temperature spikes in the transmission. This is a common long-tail search query for “ZF WG200 overheating causes.”
- Poor acceleration and reduced top speed: When the stator cannot multiply torque effectively, the vehicle will feel sluggish off the line and may struggle to reach highway speeds, even with the engine revving higher than normal.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.262.003 |
| Material | Aluminum alloy with hardened steel sprag clutch |
| Weight | 2.8 kg (6.2 lbs) |
| Outer Diameter | 195 mm |
| Inner Diameter (hub) | 35 mm |
| Blade Count | 27 |
| OEM Reference | ZF 4642.262.003 |
Compatibility
This stator is primarily designed for the ZF WG 200 Series transmissions, including the WG180, WG200, and WG210 models used in medium-duty trucks, buses, and construction equipment. It is a direct replacement for earlier stator variants in the WG family. When servicing the torque converter, always inspect the TRANSMISSION HOUSING (4644101216) and the TRANSMISSION HOUSING (4644301223) for cracks or wear, as these housings support the stator shaft. Additionally, verify the TYPE PLATE (0730365067) for correct transmission identification, and use the GROOVED STUD (0631311009) to secure the stator assembly during reinstallation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101216 | TRANSMISSION HOUSING | Encloses the gear train and supports the stator shaft |
| 4644301223 | TRANSMISSION HOUSING | Alternate housing variant for WG200 series |
| 0730365067 | TYPE PLATE | Identification plate for transmission model and serial number |
| 0631311009 | GROOVED STUD | Fastener for stator and pump assembly alignment |
| 4644303060 | COVER PLATE | Seals the torque converter housing access port |
| 4644303061 | COVER PLATE | Alternate cover plate with different bolt pattern |
| 0634306525 | O-RING | Seals stator hub to prevent fluid bypass |
| 0636305026 | SCREW PLUG | Closes oil passages during stator service |
| 4644301279 | SCREEN SHEET | Filter screen protecting stator oil feed |
| 4644301088 | SEALING CAP | Protects stator shaft bore during transport |
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