Overview
The ZF 4642.101.478 TRANSMISSION HOUSING is a critical structural component engineered specifically for the WG150 series. This OEM genuine part serves as the main casing that encloses the gear train, torque converter, and hydraulic control elements, providing precise alignment and robust protection against operational stresses. As the central load-bearing shell, it maintains the integrity of the entire transmission assembly. The SKU 4642.101.478 is manufactured to ZF’s exacting tolerances, ensuring a perfect fit and long service life in demanding industrial applications.
Symptoms of Failure
- Persistent oil leaks around the bell housing: Cracks or porosity in the housing can cause transmission fluid to seep out, leading to low fluid levels and eventual gear slippage.
- Unusual vibration or noise during gear engagement: A warped or damaged housing can misalign internal shafts, producing grinding or whining sounds under load.
- Contamination from debris entering the transmission: Housing fractures allow dirt and moisture to infiltrate, accelerating wear on clutches and bearings.
- Difficulty maintaining hydraulic pressure: Structural fatigue can distort mounting surfaces, disrupting the seal between the housing and valve body, causing erratic shifting.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4642.101.478 |
| Material | High-grade cast aluminum alloy (A356-T6) |
| Weight | Approx. 18.5 kg (40.8 lbs) |
| Dimensions (L x W x H) | 620 mm x 380 mm x 290 mm |
| OEM Reference | ZF 4642.101.478 |
| Bolt Torque Spec | 45 Nm (M10 fasteners) |
Compatibility
This transmission housing is primarily designed for the ZF WG150 series. It is also compatible with closely related models in the WG family, including the WG180, WG200, and WG210, provided the same bell housing pattern is used. Always verify your transmission’s serial number before ordering. For variant housings, consider the 4642101047 TRANSMISSION HOUSING or the 4642301207 TRANSMISSION HOUSING for alternative configurations.
During installation, you may also need the 0730365067 TYPE PLATE for proper identification, and the 0631311009 GROOVED STUD for secure mounting. These components are frequently replaced together to ensure a complete rebuild.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101047 | TRANSMISSION HOUSING | Alternative housing for WG series |
| 4642301207 | TRANSMISSION HOUSING | Variant housing for different bell housing |
| 0730365067 | TYPE PLATE | Identification plate for transmission |
| 0631311009 | GROOVED STUD | Mounting stud for housing |
| 4642301168 | SCREEN SHEET | Oil filter screen |
| 4642301169 | SCREEN SHEET | Oil filter screen (alternate) |
| 0636100621 | HEXAGON SCREW | Fastener for housing assembly |
| 4642301186 | SCREEN SHEET | Fine mesh oil screen |
| 4644106300 | SHIFT SYSTEM | Gear shift mechanism |
| 4644306500 | COVER PLATE | Access cover for housing |
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