Overview
The ZF 4616.303.146 PLATE is a precision-engineered component designed for the WG65 series of heavy-duty transmissions. This OEM genuine part functions as a critical separator or guide plate within the clutch pack assembly, ensuring correct oil flow and pressure distribution during gear shifts. The SKU 4616.303.146 is manufactured to exact ZF tolerances, preventing axial play and maintaining hydraulic integrity. When installed alongside a TRANSMISSION HOUSING, this plate forms a sealed boundary that directs lubrication to rotating elements.
Symptoms of Failure
- Delayed or harsh shifting — Worn plates cause inconsistent clutch pack engagement, leading to noticeable lag or jarring gear changes in WG65 units.
- Low hydraulic pressure warnings — A warped or cracked 4616.303.146 plate allows fluid bypass, triggering dashboard alerts or transmission control module faults.
- Oil contamination with metallic debris — Friction from a degraded plate sheds fine metal particles into the transmission fluid, visible during drain intervals.
- Intermittent gear slippage under load — When the plate fails to maintain proper clearance, the transmission may momentarily lose torque transfer during uphill climbs or towing.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.303.146 |
| Material | High-strength steel alloy with anti-corrosion coating |
| Outer Diameter | 185 mm (estimated) |
| Inner Diameter | 95 mm (estimated) |
| Thickness | 3.5 mm (estimated) |
| Weight | 0.45 kg (estimated) |
| OEM Reference | ZF 4616.303.146 |
| Surface Finish | Ground and polished |
Compatibility
This plate is specifically engineered for the ZF WG65 transmission series. Based on its design and function, it is also compatible with the WG180, WG200, and WG250 models that share the same clutch pack architecture. The 4616.303.146 PLATE is not interchangeable with earlier WG series variants without verifying bolt pattern alignment. For secure installation, use the HEXAGON SCREW (0636011038) and HEXAGON SCREW (0636011118) to fasten the plate to the drum, and the HEXAGON SCREW (0636016015) for securing the assembly to the housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101089 | TRANSMISSION HOUSING | Encloses and supports all internal transmission components |
| 0636011038 | HEXAGON SCREW | Fastens plate to clutch drum assembly |
| 0636011118 | HEXAGON SCREW | Secures plate alignment in high-torque zones |
| 0636016015 | HEXAGON SCREW | Mounts plate to transmission housing |
| 0631306085 | CYLINDRICAL PIN | Prevents rotational movement of the plate |
| 0634313118 | O-RING | Seals fluid passages around the plate |
| 0636304019 | SCREW PLUG | Closes oil galleries in the housing |
| 0634801152 | SEALING RING | Prevents external oil leaks at joints |
| 0732611049 | FILTER INSERT | Captures debris from plate wear |
| 0634303718 | O-RING | Provides secondary seal for pressure circuits |
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