Overview
The ZF 4651.364.044 INTERMEDIATE SHEET is a precision-engineered component designed for the WG100 and WG201 transmission series. This OEM genuine part functions as a critical separator and load distributor within the clutch pack assembly, ensuring consistent hydraulic pressure application and smooth gear engagement. Positioned between rotating friction discs, the intermediate sheet prevents metal-to-metal contact and maintains proper oil flow for cooling. The SKU 4651.364.044 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications.
Symptoms of Failure
- Delayed or harsh shifting — When the intermediate sheet warps or wears unevenly, clutch pack clearance increases, causing noticeable hesitation or jarring engagement during gear changes.
- Transmission oil contamination — A degraded intermediate sheet sheds fine metallic particles into the hydraulic fluid, visible as dark, glittery debris during routine oil changes.
- Intermittent gear slipping under load — Worn intermediate sheets reduce clamping force on friction discs, leading to power loss and RPM flare when the vehicle is under heavy torque demand.
- Low hydraulic pressure readings — Cracks or fatigue in the intermediate sheet allow internal leakage, resulting in below-spec pressure at the clutch circuit test ports.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4651.364.044 |
| Material | High-strength alloy steel with anti-corrosion coating |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Thickness | 2.5 mm (estimated) |
| Weight | 0.35 kg (estimated) |
| OEM Reference | ZF 4651.364.044 |
| Surface Finish | Ground and polished |
Compatibility
This intermediate sheet is engineered for the ZF WG100 and WG201 transmission families. It is also compatible with the WG180 and WG200 series when used in identical clutch pack configurations. The part fits both standard and reinforced housing assemblies, including those paired with the 4644101160: TRANSMISSION HOUSING and the 4644301323: TRANSMISSION HOUSING. For proper installation, ensure the 4644301189: THREADED BUSH is torqued to specification, and verify the 4475280043: SCREW PLUG is sealed correctly to prevent fluid bypass.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Encloses gear train and clutch assembly |
| 4644301323 | TRANSMISSION HOUSING | Alternative housing variant for WG series |
| 4644301189 | THREADED BUSH | Provides threaded mounting point for sensors |
| 4475280043 | SCREW PLUG | Seals hydraulic passages |
| 0634306198 | O-RING | Prevents fluid leaks at joint interfaces |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Fastens housing sections together |
| 0631610020 | SET SCREW | Locks adjustment mechanisms |
| 0501218540 | BREATHER | Equalizes internal pressure and vents moisture |
