Overview
The ZF 4657.304.021 SCREEN SHEET is a critical filtration component engineered specifically for the WG 210 Series transmission. Positioned within the oil sump or hydraulic circuit, this OEM genuine part captures particulate contaminants before they can circulate through the valve body and clutch assemblies. The SKU 4657.304.021 ensures precise mesh density and material integrity, directly supporting the longevity of adjacent components such as the 4657101042 TRANSMISSION HOUSING and the 4657201028 HOUS.FRONT SECT. By maintaining clean oil flow, this screen sheet prevents abrasive wear on internal gears and bearings.
Symptoms of Failure
- Erratic gear engagement or delayed shifting: A clogged screen sheet restricts hydraulic pressure, causing hesitation when the transmission attempts to shift between ranges.
- Low oil pressure warnings or fluctuating pressure readings: Debris trapped in the 4657.304.021 screen reduces flow to the pump, triggering dashboard alerts or inconsistent pressure at the test port.
- Overheating transmission fluid: Restricted filtration forces the oil to bypass the screen, allowing contaminants to circulate and generate excessive friction heat.
- Whining or groaning noise from the sump area: Starvation of the oil pump due to a blocked screen sheet produces audible cavitation sounds during operation.
Technical Specifications
| Part Number | 4657.304.021 |
| Material | Stainless steel mesh with reinforced polymer frame |
| Mesh Micron Rating | 125 microns (estimated) |
| Overall Dimensions | 210 mm x 95 mm x 8 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 4657.304.021 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This screen sheet is primarily designed for the ZF WG 210 Series transmissions. Based on its part number structure and filtration role, it is also compatible with the WG 180 and WG 200 models that share the same sump geometry. The 4657.304.021 integrates directly with the 4657201013 HOUSING REAR PART and is secured using the 0631306792 CYLINDRICAL PIN for proper alignment. Always verify the oil pan configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101042 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201028 | HOUS.FRONT SECT | Front section housing torque converter |
| 4657201013 | HOUSING REAR PART | Rear casing supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for screen sheet |
| 0636100801 | CAP SCREW | Fastener for screen sheet retention |
| 4656301148 | FIXING PLATE | Clamp plate for screen assembly |
| 4657301034 | SCREEN SHEET | Alternate mesh variant for WG180 |
| 4657301035 | SCREEN SHEET | Fine mesh variant for WG200 |
| 0636100803 | CAP SCREW | Secondary fastener for housing |
| 4656301048 | OIL FEED.HOUSG. | Oil supply channel housing |
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