Overview
The ZF 4651.364.045 PLATE is a critical structural component engineered for the WG100 and WG201 series transmissions. This OEM genuine part, identified by SKU 4651.364.045, functions as a precision-machined separator or guide plate within the clutch pack assembly. It ensures correct oil flow distribution and maintains axial alignment of rotating elements under high torque loads. When paired with a robust TRANSMISSION HOUSING, this plate prevents metal-on-metal contact and sustains hydraulic pressure integrity during gear shifts.
Symptoms of Failure
- Erratic gear engagement or delayed shifting – A warped or worn plate disrupts clutch pack clearance, causing hesitation when shifting between forward and reverse gears.
- Low transmission oil pressure warnings – Cracks or scoring on the plate surface allow hydraulic fluid to bypass, triggering pressure drops that affect overall drivability.
- Metallic debris in the oil pan – As the plate degrades, small fragments break off and circulate through the system, often accompanied by a grinding noise during operation.
- Oil leaks near the bell housing – A compromised plate can distort the sealing surface, leading to external fluid seepage that requires immediate attention.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4651.364.045 |
| Material | Case-hardened steel (C45E) |
| Outer Diameter | 195 mm |
| Inner Diameter | 142 mm |
| Thickness | 4.5 mm |
| Weight | 0.42 kg |
| Surface Finish | Ground, nitrided |
| OEM Reference | ZF 4651.364.045 |
Compatibility
This plate is specifically designed for the ZF WG100 and WG201 transmission families. It is also a direct fit for the WG180, WG200, and WG210 series where the clutch pack configuration matches the original OEM specification. For complete assembly integrity, always verify that the TRANSMISSION HOUSING is free of wear and that the THREADED BUSH is torqued to factory standards. Additionally, the SCREW PLUG must be replaced if any thread damage is observed during service.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Encloses and supports all internal gear sets |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG201 series |
| 4644301189 | THREADED BUSH | Provides wear-resistant thread for housing bolts |
| 4475280043 | SCREW PLUG | Seals hydraulic passages in the valve body |
| 0634306198 | O-RING | Prevents fluid leakage at mating surfaces |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 4644301161 | COVER PLATE | Protects clutch pack from external contamination |
| 0636100621 | HEXAGON SCREW | Fastens housing components to specified torque |
| 0631610020 | SET SCREW | Locks adjustment mechanisms in place |
| 0501218540 | BREATHER | Equalizes internal pressure and vents moisture |
