Overview
The ZF 4644.199.848 LOOSE PARTS kit is a critical service component designed specifically for the WG 201 Series transmission. This genuine OEM assembly contains the essential fasteners, seals, and positioning elements required to secure internal components within the transmission housing. Positioned within the main gear train assembly, this kit ensures proper alignment and torque retention for the planetary gear sets and clutch packs. The SKU 4644.199.848 is often replaced during a full overhaul or when addressing vibration issues in the driveline. Without these loose parts, the transmission cannot maintain its structural integrity under load, making this kit indispensable for any rebuild of the WG 201.
Symptoms of Failure
- Oil leaks around the transmission housing: When the 4644.199.848 loose parts degrade, seals and gaskets fail, causing fluid to weep from the main casing. This is a common long-tail search query for “ZF WG201 oil leak repair.”
- Gear slipping under load: Worn or missing fasteners from this kit allow internal components to shift, leading to intermittent gear engagement and power loss during acceleration.
- Abnormal driveline vibration: Loose positioning elements cause misalignment of the planetary carrier, resulting in a noticeable shudder at highway speeds.
- Difficulty shifting between ranges: If the threaded bush or screw plug from this kit becomes loose, hydraulic pressure drops, making gear changes sluggish or erratic.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4644.199.848 |
| OEM Reference | ZF 4644.199.848 |
| Material | Steel (fasteners), NBR (seals) |
| Weight | 0.85 kg (estimated) |
| Dimensions | 180 x 120 x 40 mm (kit packaging) |
| Compatible Series | WG 201 |
| Torque Specification | 45 Nm (hexagon screws) |
Compatibility
This 4644.199.848 LOOSE PARTS kit is engineered for the ZF WG 201 Series transmissions. It is also compatible with the WG 180 and WG 200 models, as these share the same housing architecture and fastener layout. The kit integrates directly with the 4644101172: TRANSMISSION HOUSING and the 4644301390: TRANSMISSION HOUSING variants. For proper sealing, pair this kit with the 0634306198: O-RING and the 0634801098: SEALING RING. The 4644301189: THREADED BUSH and 0636302005: SCREW PLUG are also required for complete assembly. Always verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101172 | TRANSMISSION HOUSING | Main casing for gear train |
| 4644301390 | TRANSMISSION HOUSING | Alternate housing variant |
| 4644301189 | THREADED BUSH | Provides threaded anchor points |
| 0636302005 | SCREW PLUG | Seals hydraulic passages |
| 0634306198 | O-RING | Prevents fluid leaks |
| 0634801098 | SEALING RING | Ensures pressure integrity |
| 0730365067 | TYPE PLATE | Identification label |
| 0631311009 | GROOVED STUD | Alignment dowel for housing |
| 4644301161 | COVER PLATE | Protects internal components |
| 0636100621 | HEXAGON SCREW | Fastens cover plate |
