Overview
The ZF 4642.199.194 LOOSE PARTS kit is a critical service component designed specifically for the WG 150 series transmission. This OEM genuine assembly contains the necessary fasteners, seals, and small hardware required to secure internal clutch packs and valve body components within the main transmission casing. As a precision-engineered loose parts set, SKU 4642.199.194 ensures that all retaining elements meet factory torque specifications, preventing unwanted movement of internal assemblies during high-load operation. This part is typically replaced during a full transmission overhaul or when addressing specific hydraulic circuit failures.
Symptoms of Failure
When the ZF 4642.199.194 LOOSE PARTS begin to degrade or become damaged, operators often notice distinct operational issues. Common failure symptoms include:
- Intermittent gear slippage under load – Worn retaining hardware can allow clutch packs to shift slightly, causing momentary loss of torque transfer.
- Low hydraulic pressure warnings – Loose or missing parts within the valve body assembly can create internal fluid leaks, triggering pressure drop alerts on the dashboard.
- Metallic rattling from the transmission housing – Dislodged loose parts may vibrate against the 4642101109: TRANSMISSION HOUSING or the 4642301205: TRANSMISSION HOUSING, producing audible noise during neutral or low-speed operation.
- Oil seepage around the shift mechanism – Degraded seals within the loose parts kit can allow ATF to escape near the 4644106300: SHIFT SYSTEM interface.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.199.194 |
| OEM Reference | ZF WG150 Series |
| Material Composition | Hardened steel with zinc-nickel plating |
| Estimated Weight | 0.45 kg (1.0 lb) |
| Kit Contents | Retaining rings, dowel pins, sealing washers, and snap rings |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4642.199.194 LOOSE PARTS kit is primarily engineered for the WG 150 transmission series. Based on the part type and fastener geometry, it is also compatible with the following ZF models: WG 180, WG 200, and select WG 120 variants that share the same internal retaining architecture. Always verify the 0730365125: TYPE PLATE on your transmission to confirm exact model specifications before installation. The kit works in conjunction with the 0631311009: GROOVED STUD to secure the valve body assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for clutch pack assembly |
| 0730365125 | TYPE PLATE | Identification plate for model verification |
| 0631311009 | GROOVED STUD | Alignment fastener for valve body mounting |
| 4642301168 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4642301169 | SCREEN SHEET | Secondary filter element for oil return |
| 0636100621 | HEXAGON SCREW | Mounting bolt for housing flanges |
| 4642301186 | SCREEN SHEET | High-flow filter for cooler circuit |
| 4644106300 | SHIFT SYSTEM | Hydraulic actuator for gear selection |
| 4644306500 | COVER PLATE | Sealing plate for shift mechanism access |
