Overview
The ZF 4642.301.186 SCREEN SHEET is a critical filtration component engineered for the WG 150 series transmission. This OEM genuine part, identified by SKU 4642.301.186, sits within the transmission’s oil sump or valve body assembly, where it captures metallic debris, clutch wear particles, and other contaminants before they can circulate through the hydraulic system. By maintaining clean oil flow, this screen sheet ensures consistent clutch engagement and valve operation, directly protecting downstream components like the 4642101108: TRANSMISSION HOUSING and the 4642301208: TRANSMISSION HOUSING from abrasive damage.
Symptoms of Failure
When the 4642.301.186 screen sheet becomes clogged or physically damaged, operators often notice these specific failure indicators:
- Erratic gear engagement or delayed shifting – Restricted oil flow causes hesitation when the transmission attempts to shift under load, a common complaint in WG150 units.
- Intermittent oil pressure warnings – A blocked screen sheet reduces pump efficiency, triggering dashboard alerts or diagnostic trouble codes related to low line pressure.
- Contaminated oil with visible debris – If the screen sheet tears, metallic particles bypass filtration and appear in the oil pan during routine service, accelerating wear on the 0730365125: TYPE PLATE and valve body surfaces.
- Overheating transmission fluid – Reduced flow through the cooler circuit leads to elevated operating temperatures, often mistaken for cooler failure.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4642.301.186 |
| OEM Reference | ZF WG150 Series |
| Material | Stainless steel mesh with reinforced polymer frame |
| Mesh Micron Rating | 150 µm (estimated) |
| Overall Dimensions | 210 mm x 85 mm x 12 mm |
| Weight | 0.18 kg |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This screen sheet is primarily designed for the ZF WG150 transmission series, but its filtration geometry also suits the WG180 and WG200 models due to shared sump architecture. It is a direct replacement for earlier screen sheets in the WG150 family, including the 4642301168: SCREEN SHEET and 4642301169: SCREEN SHEET. For proper sealing, always pair this part with a new 0634303340: O-RING and secure it using the 0636100621: HEXAGON SCREW. The 0630361029: SEALING CAP and 4642306254: ADAPTER are also frequently replaced during screen sheet service intervals.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing variant for WG150 |
| 0730365125 | TYPE PLATE | Identification plate with serial number |
| 0631311009 | GROOVED STUD | Alignment fastener for housing assembly |
| 4642301168 | SCREEN SHEET | Alternate filtration screen for WG180 |
| 4642301169 | SCREEN SHEET | Fine-mesh screen for WG200 |
| 0636100621 | HEXAGON SCREW | Mounting bolt for screen retention |
| 0630361029 | SEALING CAP | Port plug for test points |
| 4642306254 | ADAPTER | Converter housing interface |
| 0634303340 | O-RING | Hydraulic seal for screen housing |
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