Overview
The ZF 4644.199.719 LOOSE PARTS for WG200 is a genuine OEM component designed to maintain the structural integrity and operational precision of ZF WG-series transmissions. This specific SKU, 4644.199.719, serves as a critical hardware kit that secures internal assemblies within the transmission housing, preventing unwanted movement of shafts and gears under high torque loads. It is positioned within the main casing assembly, working directly alongside the 4644105475: DISCONNECTION mechanism to ensure smooth power disengagement. Without this loose parts kit, the transmission’s internal clearances can shift, leading to premature wear on adjacent components.
Symptoms of Failure
When the 4644.199.719 LOOSE PARTS kit begins to degrade, operators typically notice three distinct failure modes. First, intermittent gear slippage during load shifts occurs as the fasteners lose their clamping force, allowing the 4642303097: OUTPUT FLANGE to misalign. Second, audible rattling or knocking from the bell housing indicates that the loose parts have allowed axial play in the shaft assembly. Third, chronic oil seepage around the transmission housing seams develops because the compromised hardware cannot maintain proper seal compression against the 4644101134: TRANSMISSION HOUSING. These symptoms often escalate if the 0636020211: HEXAGON SCREW is not torqued correctly during reinstallation.
Technical Specifications
| Part Number | 4644.199.719 |
| Product Type | Loose Parts Kit (Hardware Set) |
| Material Composition | Case-hardened steel with zinc-nickel plating |
| Estimated Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF Friedrichshafen AG |
| Thread Pitch | M10 x 1.5 (primary fasteners) |
| Operating Torque Range | 45–55 Nm |
Compatibility
This genuine ZF 4644.199.719 LOOSE PARTS kit is engineered for the WG 200 Series transmission family. Based on its design and fastener geometry, it is fully compatible with the WG180, WG200, and WG210 models. It also cross-fits select WG150 variants where the housing bolt pattern matches. Always verify the 0730365125: TYPE PLATE on your transmission to confirm the exact revision level before ordering. The kit replaces all loose hardware that interfaces with the 4644301247: THREADED BUSH and 0634303485: O-RING seals.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105475 | DISCONNECTION | Controls clutch pack separation |
| 4642303097 | OUTPUT FLANGE | Transfers torque to driveshaft |
| 0636020211 | HEXAGON SCREW | Secures housing to bell housing |
| 4644101134 | TRANSMISSION HOUSING | Main structural casing |
| 4644301349 | HOUSING | Intermediate support housing |
| 0730365125 | TYPE PLATE | Identification and spec plate |
| 0631311009 | GROOVED STUD | Alignment dowel for assembly |
| 0636305019 | SCREW PLUG | Seals oil passages |
| 4644301247 | THREADED BUSH | Reinforced threaded insert |
| 0634303485 | O-RING | Hydraulic seal between components |
