Overview
The ZF 4644.183.182 LOOSE PARTS assembly is a critical internal component designed specifically for the WG 200 Series transmission. This genuine OEM part functions as a collection of precision-engineered fasteners, spacers, and retaining elements that secure key internal assemblies within the transmission housing. Positioned within the main gear train area, the 4644.183.182 ensures proper alignment and torque retention for clutch packs and planetary gear sets. The SKU 4644.183.182 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life when replacing worn or damaged loose parts during a transmission overhaul.
Symptoms of Failure
- Transmission gear slipping under load: Worn loose parts can cause misalignment of clutch packs, leading to intermittent power loss or slipping during acceleration.
- Unusual metallic rattling or vibration: Degraded fasteners or spacers may allow internal components to shift, producing a distinct rattling noise from the transmission bell housing.
- Oil leaks near the housing seam: If the 4644.183.182 assembly fails to maintain proper clamping force, the TRANSMISSION HOUSING (4644101249) or TRANSMISSION HOUSING (4644301402) may develop gaps, allowing fluid to escape.
- Erratic shift timing: Loose retaining elements can disrupt hydraulic pressure pathways, causing delayed or harsh shifts between gears.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4644.183.182 |
| Material | Hardened steel with anti-corrosion coating |
| Weight | 0.45 kg (approx.) |
| Dimensions | 85 mm x 45 mm x 25 mm (assembly) |
| OEM Reference | ZF 4644.183.182 (Genuine) |
| Compatible Housing | 4644101249 & 4644301402 |
| Sealing Component | 0634306323 O-RING |
| Cover Plate | 4644301298 COVER PLATE |
Compatibility
This genuine ZF 4644.183.182 LOOSE PARTS assembly is engineered for the WG 200 Series transmission family. It is directly compatible with models including WG180, WG200, and WG210. The part is also used in certain ZF Ecomat 4HP and 5HP variants that share the same loose parts architecture. Always verify the housing compatibility with the TRANSMISSION HOUSING (4644101249) or TRANSMISSION HOUSING (4644301402) before installation. For complete sealing, pair this assembly with the 0634306323 O-RING and the 4644301298 COVER PLATE.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101249 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301402 | TRANSMISSION HOUSING | Alternative housing variant for WG200 |
| 4644301298 | COVER PLATE | Seals and protects internal components |
| 0634306323 | O-RING | Prevents fluid leaks at housing joints |
| 0636305026 | SCREW PLUG | Seals oil passages and drain ports |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4644301088 | SEALING CAP | Closes unused housing openings |
| 4644298503 | REPAIR KIT | Complete overhaul kit for WG200 series |
| 4475280079 | SCREW PLUG | High-pressure plug for valve body |
| 4644121150 | OIL PIPE | Routes lubricant to planetary gears |
