Overview
The ZF 4642.199.802 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 200 Series transmission. This genuine OEM part number 4642.199.802 contains the essential loose components required to maintain proper hydraulic pressure and mechanical alignment within the gear train. Positioned within the valve body and clutch housing interface, this kit ensures that all fasteners, spacers, and small hardware remain secure under high-torque conditions. When rebuilding a WG200, replacing this loose parts set is mandatory to prevent premature wear on adjacent assemblies such as the 4644101249: TRANSMISSION HOUSING and the 4644301402: TRANSMISSION HOUSING.
Symptoms of Failure
- Intermittent gear slippage under load: When the loose parts become fatigued or missing, hydraulic circuits lose integrity, causing the transmission to slip between gears during acceleration.
- External oil seepage at housing joints: Worn or deformed components in this kit compromise the seal between the 4644301298: COVER PLATE and the main casing, leading to visible fluid leaks.
- Unusual metallic rattling from the bell housing: Loose hardware within the kit can vibrate against the transmission housing, producing a distinct noise that worsens with RPM.
- Erratic shift timing: Failure of these loose parts disrupts the pilot pressure sequence, resulting in delayed or harsh shifts that are difficult to diagnose without inspecting the kit.
Technical Specifications
| Part Number | 4642.199.802 |
| OEM Reference | ZF WG200 Series |
| Material | Hardened steel with zinc plating (fasteners); nitrile rubber (seals) |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions | 120 mm x 80 mm x 40 mm (kit packaging) |
| Torque Spec | 25 Nm (fasteners); 8 Nm (screws) |
| Operating Temp | -40°C to +120°C |
Compatibility
This genuine ZF 4642.199.802 LOOSE PARTS kit is engineered for the WG 200 Series transmissions, including models WG200, WG210, and WG180 variants that share the same valve body architecture. It is also compatible with certain WG160 units when used with the corresponding 0634306323: O-RING for sealing. Always verify your transmission serial number before ordering, as earlier WG180 builds may require additional adapters. For parking brake integration, the 4644109044: PARKING BRAKE assembly must be inspected concurrently.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101249 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301402 | TRANSMISSION HOUSING | Secondary housing for clutch pack |
| 4644301298 | COVER PLATE | Seals the valve body access port |
| 0634306323 | O-RING | Hydraulic seal between housings |
| 0636305026 | SCREW PLUG | Closes oil drain passages |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4644301088 | SEALING CAP | Protects sensor ports from contamination |
| 4644109044 | PARKING BRAKE | Electromechanical parking lock actuator |
| 0501211070 | BRAKE | Friction brake for PTO engagement |
| 0501317036 | PISTON | Hydraulic piston for clutch apply |
