Overview
The ZF 6006.022.201 FS SG 6 S is a precision-engineered synchronizer assembly designed for the WG200 and WG210 series transmissions. This OEM genuine part, referenced by SKU 6006.022.201, sits within the shift system of the gearbox, where it facilitates smooth engagement and disengagement of gears during operation. By managing rotational speed differences between shafts, this component ensures that gear changes occur without grinding or excessive wear. It is a critical element for maintaining driveline integrity in heavy-duty industrial applications, working directly with the TRANSMISSION HOUSING (4644101180) and the TRANSMISSION HOUSING (4644301225) to provide structural support and alignment.
Symptoms of Failure
When the ZF 6006.022.201 synchronizer wears out, operators may notice distinct performance issues. Gear grinding during shifts is a primary indicator, often accompanied by a harsh, metallic noise when moving between ratios. Another common symptom is difficulty engaging a specific gear, where the lever feels blocked or requires excessive force. Oil contamination from metal particles can occur as the synchronizer rings degrade, leading to reduced lubrication efficiency. Finally, intermittent gear slipping under load may develop, causing power loss during acceleration. These failure modes are frequently searched as “ZF WG200 gear grinding causes” or “WG210 synchronizer failure symptoms.”
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 6006.022.201 |
| OEM Reference | ZF FS SG 6 S |
| Material | Hardened steel with bronze synchronizer rings |
| Weight | Approximately 1.8 kg (4.0 lbs) |
| Dimensions | 120 mm x 80 mm x 65 mm |
| Compatible Housing | 4644101180 and 4644301225 |
| Identification | Use TYPE PLATE (0730365067) for verification |
| Mounting Hardware | GROOVED STUD (0631311009) required |
Compatibility
This synchronizer assembly is engineered for ZF WG series transmissions, specifically the WG200 and WG210 models. It also fits the WG180 series when used with the appropriate COVER PLATE (4644301298) and O-RING (0634306525). The part is integral to the shift system, which includes the SHIFT SYSTEM (4644106300) assembly. For sealing integrity, pair it with the SCREW PLUG (0636305026) and SEALING CAP (4644301088). Always confirm compatibility using the TYPE PLATE (0730365067) to avoid mismatched installations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101180 | TRANSMISSION HOUSING | Encloses and supports gear train |
| 4644301225 | TRANSMISSION HOUSING | Alternate housing for WG210 series |
| 0730365067 | TYPE PLATE | Identification and specification label |
| 0631311009 | GROOVED STUD | Secures housing components |
| 4644301298 | COVER PLATE | Protects internal shift mechanism |
| 0634306525 | O-RING | Prevents oil leaks at joints |
| 0636305026 | SCREW PLUG | Seals fluid passages |
| 4644301279 | SCREEN SHEET | Filters debris from oil flow |
| 4644301088 | SEALING CAP | Closes unused ports |
| 4644106300 | SHIFT SYSTEM | Controls gear selection |
