Overview
The ZF 4642.199.055 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 181 series transmission. This OEM genuine part contains the necessary loose components required to secure and seal the transmission housing during a rebuild or overhaul. Positioned within the main casing assembly, this kit ensures that all fasteners, bushings, and sealing elements are correctly installed to maintain hydraulic pressure and structural integrity. The SKU 4642.199.055 is a factory-original ZF part, guaranteeing precise fitment and material compatibility for heavy-duty industrial applications.
Symptoms of Failure
When the components within the 4642.199.055 LOOSE PARTS kit begin to degrade, operators may notice several distinct failure modes. Oil leaks around the transmission housing are the most common symptom, often caused by worn sealing rings or damaged threaded bushings. Gear slipping under load can occur if the screw plugs or cover plates become loose, allowing pressure loss in the hydraulic circuits. Abnormal vibration or noise from the bell housing typically indicates that the grooved studs or hexagon screws have fatigued. Finally, difficulty maintaining transmission fluid levels without visible external leaks suggests internal seal failure within the housing assembly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.199.055 |
| OEM Reference | ZF 4642.199.055 |
| Material | Steel / Nitrile Rubber (seals) |
| Weight | 0.85 kg (estimated) |
| Dimensions | 180 mm x 120 mm x 40 mm (kit packaging) |
| Application | WG 181 Series |
| Kit Contents | Bushings, plugs, screws, sealing rings, type plate |
Compatibility
This LOOSE PARTS kit is primarily engineered for the ZF WG 181 transmission series. Based on the part type and OEM numbering, it is also compatible with the ZF WG 180 and ZF WG 200 series transmissions that share the same housing architecture. The kit interfaces directly with the 4644101217: TRANSMISSION HOUSING and the 4644301383: TRANSMISSION HOUSING, as well as the 4644301189: THREADED BUSH and the 4475280043: SCREW PLUG. Always verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101217 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301383 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 4644301189 | THREADED BUSH | Provides threaded anchor points in housing |
| 4475280043 | SCREW PLUG | Seals oil passages and inspection ports |
| 0634306198 | O-RING | Static seal between housing and covers |
| 0634801098 | SEALING RING | Dynamic seal for rotating shafts |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Alignment and fastening stud for covers |
| 4644301161 | COVER PLATE | Protective cover for housing openings |
| 0636100621 | HEXAGON SCREW | Fastener for securing housing components |
