Overview
The ZF 4657.301.066 SCREEN SHEET is a critical filtration component engineered for the WG 211 Series transmission. Positioned within the hydraulic control circuit, this genuine OEM part captures metallic debris and particulate contaminants before they can circulate through the valve body and clutch assemblies. By maintaining fluid cleanliness, the screen sheet ensures consistent hydraulic pressure delivery and protects precision-machined surfaces from abrasive wear. The SKU 4657.301.066 is a direct replacement for the original factory-installed screen, guaranteeing exact fitment and material compatibility with ZF’s proprietary fluid dynamics.
Symptoms of Failure
- Erratic gear engagement or delayed shifting — A clogged screen sheet restricts oil flow to the 4657120005: PRESSURE REGULATOR, causing inconsistent clutch application and harsh shifts.
- Transmission overheating under load — Debris accumulation reduces heat dissipation efficiency, leading to elevated sump temperatures and accelerated fluid degradation.
- Intermittent loss of drive in forward gears — When the screen sheet becomes partially obstructed, the 0501211384: VALVE may fail to maintain proper line pressure, resulting in momentary power loss.
- Visible metallic particles in drained fluid — A ruptured or degraded screen sheet allows debris to bypass filtration, contaminating the 4656306145: PISTON bores and accelerating internal wear.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.301.066 |
| Material | Stainless steel mesh with reinforced polymer frame |
| Mesh Micron Rating | 150 µm nominal |
| Overall Dimensions | 210 mm × 85 mm × 4 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 4657.301.066 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This screen sheet is engineered for the ZF WG 211 Series and is also compatible with the WG180, WG200, and WG210 transmission families. It integrates directly with the 0630532183: INDENTED RING that secures the filter assembly within the sump. For complete hydraulic restoration, always pair this screen with a new 4657120005: PRESSURE REGULATOR and 0501211384: VALVE to ensure balanced flow across all clutch circuits.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Maintains stable hydraulic pressure to clutches and brakes |
| 0501211384 | VALVE | Directs oil flow for shift timing and torque converter lockup |
| 0630532183 | INDENTED RING | Retains screen sheet and seals filter cavity |
| 4656306145 | PISTON | Applies clamping force to clutch packs |
| 0732042767 | COMPRESSION SPRING | Provides return force for valve spools |
| 0631612064 | SET SCREW | Secures valve body components |
| 0631610026 | SET SCREW | Adjusts pressure regulator preload |
| 4657101048 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657301061 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657301062 | HOUSING REAR PART | Rear section of transmission housing |
