Overview
The ZF 4642.199.446 LOOSE PARTS kit is a critical service component designed specifically for the WG 150 Series transmission. This genuine OEM assembly includes all necessary fasteners, seals, and positioning elements required to secure internal sub-assemblies within the gearbox housing. As a loose parts set, it ensures that the TRANSMISSION HOUSING and the TRANSMISSION HOUSING remain properly aligned under high torque loads. The SKU 4642.199.446 is frequently ordered during a full rebuild or when replacing the TYPE PLATE to guarantee correct identification and fitment of all hardware.
Symptoms of Failure
- Transmission oil seepage at housing joints: When the loose parts kit degrades, seals lose compression, leading to slow oil leaks around the main case split line. This is a common long-tail search query for “ZF WG150 oil leak repair.”
- Abnormal gear rattle or vibration: Worn fasteners allow internal components to shift, causing a distinct metallic chatter during acceleration or deceleration.
- Difficulty engaging gears or delayed shifts: If the GROOVED STUD becomes loose, the shift linkage can misalign, resulting in hard shifting or incomplete engagement.
- Increased transmission noise under load: Loose parts create micro-movements that amplify drivetrain noise, often mistaken for bearing failure.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4642.199.446 |
| Material Composition | Steel alloy with zinc plating (fasteners); nitrile rubber (seals) |
| Weight (estimated) | 0.45 kg (1.0 lb) |
| Dimensions (packaged) | 150 mm x 100 mm x 40 mm |
| OEM Reference | ZF Friedrichshafen AG |
| Application | WG 150 Series internal assembly |
Compatibility
This loose parts kit is primarily engineered for the ZF WG 150 transmission series. Based on the part type and mounting geometry, it is also compatible with the WG 180 and WG 200 models when used in conjunction with the correct SCREEN SHEET and SCREEN SHEET variants. The kit works with both standard and heavy-duty configurations, provided the HEXAGON SCREW torque specifications are followed. For specialized applications, verify fitment with the SCREEN SHEET and SHIFT SYSTEM assemblies.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural case for gear assembly |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing section for clutch pack |
| 0730365125 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for housing mating surfaces |
| 4642301168 | SCREEN SHEET | Oil filter screen for lubrication circuit |
| 4642301169 | SCREEN SHEET | Fine mesh filter for hydraulic system |
| 0636100621 | HEXAGON SCREW | Fastener for housing bolt pattern |
| 4642301186 | SCREEN SHEET | Secondary oil strainer for valve body |
| 4644106300 | SHIFT SYSTEM | Mechanical shift linkage assembly |
| 4644306500 | COVER PLATE | Access cover for shift mechanism |
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