Overview
The ZF 4642.199.201 LOOSE PARTS set is a critical OEM genuine service kit designed specifically for the WG 150 Series transmission. This assembly consolidates essential fasteners, seals, and positioning components that secure internal hydraulic circuits and structural elements within the gearbox. As a loose parts kit, it provides all the necessary hardware to properly mount and seal the 4642101109 TRANSMISSION HOUSING and the 4642301205 TRANSMISSION HOUSING during overhaul or repair. The SKU 4642.199.201 is factory-matched to ensure correct thread pitch, material hardness, and corrosion resistance for long service life in heavy-duty industrial applications.
Symptoms of Failure
- External oil seepage at housing joints: When the loose parts (bolts, washers, or seals) degrade, pressurized transmission fluid escapes around the mating surfaces of the housing, leaving visible wet spots on the bell housing.
- Intermittent gear slippage under load: Worn or loose fasteners can cause micro-movement in the valve body or shift rail assembly, leading to inconsistent clutch pack engagement and momentary power loss during acceleration.
- Abnormal vibration or driveline noise: Missing or fatigued hardware in the loose parts kit allows the transmission housing to shift slightly, creating a low-frequency rumble or metallic chatter that worsens at highway speeds.
- Difficulty maintaining proper fluid level: Degraded sealing components within the 4642.199.201 kit can cause slow internal leakage, resulting in frequent low-fluid warnings and the need for top-offs between service intervals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.199.201 |
| OEM Reference | ZF LOOSE PARTS WG150 |
| Material Composition | Steel alloy (fasteners) / NBR (seals) |
| Weight (kit) | 0.85 kg (1.87 lbs) |
| Thread Sizes Included | M8, M10, M12 (various lengths) |
| Torque Specification | Per ZF service manual (varies by fastener) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4642.199.201 loose parts kit is engineered for the WG 150 Series transmission family. It is directly compatible with models including WG150, WG151, WG152, and WG155. The kit also supports select variants of the WG180 and WG200 series when used with the appropriate 0631311009 GROOVED STUD for alignment. Always verify your transmission’s serial number against the OEM parts catalog to ensure correct fitment, as housing configurations differ between early and late production units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for valve body section |
| 0730365125 | TYPE PLATE | Identification plate with transmission specs |
| 0631311009 | GROOVED STUD | Alignment stud for housing positioning |
| 4642301168 | SCREEN SHEET | Fine mesh filter for oil sump |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100621 | HEXAGON SCREW | Fastener for housing attachment |
| 4642301186 | SCREEN SHEET | Secondary filter element |
| 4644159321 | SHIFT SYSTEM | Mechanical shift rail assembly |
| 4644306565 | VALVE HOUSING | Hydraulic control block |
