Overview
The ZF 4642.101.109 TRANSMISSION HOUSING is the primary structural casing for the WG150 series, serving as the rigid backbone that encloses the gear train, clutch packs, and hydraulic valve body. This OEM genuine part ensures precise alignment of internal rotating assemblies and withstands extreme torsional loads during heavy-duty operation. As the central housing, it directly interfaces with the bell housing and rear cover, making its integrity critical for overall transmission performance. The SKU 4642.101.109 is a direct replacement for original equipment, guaranteeing factory tolerances and material specifications.
Symptoms of Failure
- External oil seepage at mating surfaces: Cracks or porosity in the housing cause fluid to escape around the bell housing or rear cover, leading to low oil levels and eventual gear slippage.
- Abnormal gear engagement noise: Warpage or bolt-hole elongation shifts bearing alignment, producing a distinct grinding or whining sound during shifts under load.
- Persistent clutch pack overheating: Distortion of the housing bore restricts oil flow to the clutches, causing thermal damage and burnt transmission fluid odor.
- Vibration during torque converter lockup: A fractured housing mount or cracked flange transmits driveline vibrations into the chassis, especially at highway speeds.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4642.101.109 |
| Material | High-grade aluminum alloy (A356-T6) |
| Weight | 18.5 kg (40.8 lbs) |
| Overall Length | 520 mm |
| Overall Width | 380 mm |
| Overall Height | 310 mm |
| Bolt Hole Pattern | 12-point, M12 x 1.75 |
| Surface Treatment | Clear anodized |
Compatibility
This housing is engineered for the ZF WG150 series and is also compatible with WG180 and WG200 models when used with the appropriate 4642301205 TRANSMISSION HOUSING adapter kit. It fits all WG150 variants, including those with integrated retarder systems. For proper identification, always verify the 0730365125 TYPE PLATE on your unit before installation. The housing accepts the 0631311009 GROOVED STUD for secure mounting and includes provisions for the 4642301168 SCREEN SHEET oil filter assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG180/200 |
| 0730365125 | TYPE PLATE | Identification plate with serial number |
| 0631311009 | GROOVED STUD | Locating pin for housing alignment |
| 4642301168 | SCREEN SHEET | Fine mesh oil filter screen |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter screen |
| 0636100621 | HEXAGON SCREW | M12 mounting bolt for housing |
| 4642301186 | SCREEN SHEET | Secondary oil filter element |
| 4644106231 | SHIFT SYSTEM | Hydraulic shift actuator assembly |
| 4644306470 | GASKET | Housing-to-bell housing seal |
| 4644306194 | COVER PLATE | Access cover for valve body |
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