Overview
The ZF 4646.303.060 SCREEN SHEET is a critical filtration component engineered specifically for the WG 250 Series transmission. Positioned within the hydraulic control circuit, this OEM genuine part captures particulate contaminants before they can enter the valve body and clutch assemblies. The SKU 4646.303.060 acts as a primary barrier, ensuring that only clean transmission fluid circulates through the torque converter and planetary gear sets. Without this screen sheet, debris can bypass filtration and accelerate internal wear, making it essential for maintaining hydraulic pressure integrity during heavy-duty operations.
Symptoms of Failure
- Delayed gear engagement or harsh shifting — When the screen sheet becomes clogged, fluid flow to the shift valves is restricted, causing noticeable lag or jarring transitions between forward and reverse gears.
- Intermittent transmission overheating — A blocked screen sheet reduces oil circulation through the cooler, leading to elevated operating temperatures that trigger warning lights or thermal shutdowns.
- Erratic clutch pack performance — Contaminated fluid bypassing a degraded screen sheet causes clutch slip or shudder during acceleration, particularly under load in WG250-equipped vehicles.
- Low hydraulic pressure readings — Debris accumulation on the 4646.303.060 restricts oil intake, resulting in pressure drops that can be detected via diagnostic port testing.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4646.303.060 |
| Material | Stainless steel mesh with reinforced polymer frame |
| Mesh Rating | 100 microns nominal |
| Overall Dimensions | 180 mm x 120 mm x 8 mm |
| Weight | 0.35 kg |
| OEM Reference | ZF 4646.303.060 (genuine) |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This screen sheet is designed for the ZF WG 250 Series, but it also fits several related transmission models that share the same hydraulic sump architecture. Compatible transmissions include the WG 180, WG 200, WG 250, and WG 300 series. The 4646.303.060 is installed directly beneath the TRANSMISSION HOUSING and is secured by the HEXAGON SCREW fasteners. For complete assembly, pair this screen sheet with the HOUSING and the COVER to ensure proper sealing and fluid routing. Always verify your transmission serial number against ZF’s compatibility chart before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101066 | TRANSMISSION HOUSING | Encloses the gear train and hydraulic components |
| 4646301228 | HOUSING | Internal support structure for valve body assembly |
| 4646301251 | COVER | Seals the screen sheet compartment against leaks |
| 0636015304 | HEXAGON SCREW | Fastens housing and cover components |
| 0636101828 | CAP SCREW | Secures the screen sheet retention bracket |
| 4646301100 | COVER SHEET | Protective plate over hydraulic passages |
| 4646301217 | COVER SHEET | Secondary cover for oil distribution channels |
| 4646201007 | SCREEN SHEET | Alternate mesh filter for WG200 applications |
| 0730365125 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for housing positioning |
