Overview
The ZF 4642.101.108 TRANSMISSION HOUSING is a structural core component engineered specifically for the WG150 series. This OEM genuine part encloses the planetary gear sets, valve body, and clutch assemblies, providing precise alignment and protection against contaminants. As the main structural shell, it absorbs torsional loads and maintains hydraulic pressure integrity during heavy-duty operation. The SKU 4642.101.108 is machined to exact ZF tolerances, ensuring seamless integration with internal rotating elements and external mounting points.
Symptoms of Failure
- External oil seepage around bellhousing seam: When the housing develops micro-cracks or gasket surface wear, transmission fluid leaks become visible, often mistaken for a simple pan gasket issue.
- Gear engagement hesitation under load: A warped or distorted housing causes misalignment of the valve body, leading to delayed shifts or slipping in higher gears during uphill hauling.
- Abnormal vibration at highway speeds: Bearing bore wear within the housing allows shaft deflection, producing a low-frequency rumble that intensifies with RPM.
- Contaminated fluid from debris ingress: Cracks near the bellhousing allow road grit and moisture to enter, accelerating internal wear and reducing fluid service life.
Technical Specifications
| Part Number | 4642.101.108 |
| Material | High-strength aluminum alloy (A356-T6) |
| Weight | 18.7 kg (41.2 lbs) |
| Overall Length | 620 mm |
| Overall Width | 410 mm |
| Overall Height | 380 mm |
| OEM Reference | ZF 4642.101.108 |
| Bolt Hole Pattern | 12-point, M12 x 1.5 |
| Sealing Surface Finish | Ra 0.8 µm |
Compatibility
This housing is primarily designed for the ZF WG150 series transmissions. It also fits select variants of the WG180 and WG200 series when used with the appropriate ADAPTER (4642306254). For WG120 and WG250 models, verify bellhousing bolt pattern compatibility. The housing accepts the SCREEN SHEET (4642301168) and SCREEN SHEET (4642301186) for filtration, and is secured using HEXAGON SCREW (0636100621) fasteners. Always pair with the O-RING (0634303340) for leak-free sealing.
During installation, the TRANSMISSION HOUSING (4642301208) serves as the primary structural mate, while the TYPE PLATE (0730365125) must be affixed for proper identification. The GROOVED STUD (0631311009) provides alignment during assembly. Use SEALING CAP (0630361029) on unused ports to prevent contamination.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642301208 | TRANSMISSION HOUSING | Primary structural housing for gear train |
| 0730365125 | TYPE PLATE | Identification and specification label |
| 0631311009 | GROOVED STUD | Alignment dowel for housing mating |
| 4642301168 | SCREEN SHEET | Oil filter screen for suction circuit |
| 4642301169 | SCREEN SHEET | Secondary filter screen for return line |
| 0636100621 | HEXAGON SCREW | Fastener for housing assembly |
| 0630361029 | SEALING CAP | Port closure plug |
| 4642306254 | ADAPTER | Bellhousing adapter for cross-series fit |
| 0634303340 | O-RING | Seal between housing and adapter |
| 4642301186 | SCREEN SHEET | Fine mesh screen for valve body |
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