Overview
The ZF 4642.306.273 INTERMEDIATE PLATE is a critical structural component within the WG150 series automatic transmission. Positioned between the main transmission housing and the torque converter housing, this OEM genuine part serves as a precision-machined separator that supports the oil pump assembly and directs hydraulic fluid flow. The SKU 4642.306.273 ensures exact fitment and load-bearing integrity for heavy-duty industrial applications, preventing misalignment of internal rotating assemblies.
Symptoms of Failure
- Hydraulic fluid seepage between housings: A warped or cracked intermediate plate causes oil leaks at the mating surface, often mistaken for a failing gasket. Search for “ZF WG150 oil leak between transmission housings” to identify this issue.
- Erratic gear engagement under load: When the plate distorts, pump pressure drops, leading to delayed or harsh shifting. This matches queries like “WG150 transmission slipping when hot.”
- Metallic debris in transmission pan: Wear on the plate’s bearing surfaces generates fine metal particles, a symptom frequently searched as “ZF transmission metal shavings in fluid.”
- Torque converter misalignment: A damaged intermediate plate causes the converter to wobble, producing a low-frequency rumble during acceleration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4642.306.273 |
| Material | High-tensile cast iron (GGG-40) |
| Outer Diameter | 310 mm |
| Thickness | 18.5 mm |
| Weight | 4.2 kg |
| OEM Reference | ZF 4642.306.273 |
| Surface Finish | Ground, Ra 0.8 µm |
Compatibility
This intermediate plate is engineered for the ZF WG150 transmission series. It is also compatible with the WG180 and WG200 models, as these share the same bolt pattern and pump interface. For WG250 and WG300 variants, verify housing dimensions before installation. The plate integrates directly with the TRANSMISSION HOUSING (4642101108) and the TRANSMISSION HOUSING (4642301208), requiring proper torque sequencing. Always replace the TYPE PLATE (0730365125) for accurate identification, and secure the assembly with the GROOVED STUD (0631311009) to prevent fastener loosening.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301208 | TRANSMISSION HOUSING | Rear housing for output shaft support |
| 0730365125 | TYPE PLATE | Identification tag for transmission series |
| 0631311009 | GROOVED STUD | Alignment fastener for housing assembly |
| 4642301168 | SCREEN SHEET | Filter mesh for hydraulic fluid |
| 4642301169 | SCREEN SHEET | Secondary filter element |
| 0636100621 | HEXAGON SCREW | M10 bolt for housing fastening |
| 0630361029 | SEALING CAP | Port plug for pressure testing |
| 4642306254 | ADAPTER | Converter-to-plate interface |
| 0634303340 | O-RING | Hydraulic seal between plates |
