Overview
The ZF 4642.199.248 LOOSE PARTS kit is a critical service assembly designed for the WG 201 series transmission. This OEM genuine part contains the essential fasteners, seals, and positioning components required to secure internal assemblies within the transmission housing. Specifically, the SKU 4642.199.248 ensures that the valve body and clutch pack retainers remain properly torqued and aligned during high-torque operations. Without this kit, the structural integrity of the gear train is compromised, leading to misalignment and premature wear. This part is often replaced during a full overhaul alongside the 4644101160: TRANSMISSION HOUSING to guarantee a leak-free seal.
Symptoms of Failure
When the 4642.199.248 LOOSE PARTS begin to degrade, operators will notice distinct performance issues. The most common failure symptom is oil weeping from the transmission bell housing, indicating that the included seals have hardened. A second indicator is intermittent gear slippage under load, caused by loose fasteners allowing clutch pack clearance to drift. Third, you may hear a rattling noise from the transmission sump as loose hardware rattles against the 4644301323: TRANSMISSION HOUSING. Finally, erratic shift timing often points to a failing 4644301189: THREADED BUSH within this kit, which disrupts hydraulic pressure feedback.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.199.248 |
| OEM Reference | ZF WG 201 Series |
| Material Composition | Steel alloy with zinc plating; NBR rubber seals |
| Weight | 0.85 kg (1.87 lbs) |
| Kit Contents | 4x hexagon screws, 2x set screws, 1x threaded bush, 1x screw plug, 1x O-ring |
| Thread Pitch | M10 x 1.5 (primary fasteners) |
| Torque Specification | 45 Nm ± 5 Nm |
Compatibility
This LOOSE PARTS kit is engineered specifically for the ZF WG 201 transmission series. It is also compatible with the WG 180 and WG 200 models that share the same housing bolt pattern and seal groove dimensions. The kit is not recommended for the WG 120 or WG 150 series due to differing thread sizes. Always verify the presence of the 4475280043: SCREW PLUG in your existing assembly, as this part is included in the 4642.199.248 kit and must match the port depth of your specific transmission variant.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG 201 |
| 4644301189 | THREADED BUSH | Provides wear-resistant thread for sensor ports |
| 4475280043 | SCREW PLUG | Seals hydraulic test ports |
| 0634306198 | O-RING | Prevents fluid bypass at joint interfaces |
| 0730365067 | TYPE PLATE | Identification tag for transmission model |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Secures cover plate to housing |
| 0631610020 | SET SCREW | Locks adjustment mechanisms in place |
| 0501218540 | BREATHER | Equalizes internal pressure during thermal cycling |
