Overview
The ZF 4642.199.903 LOOSE PARTS kit is a critical service component designed for the WG 200 Series transmission. This OEM genuine assembly contains the specific fasteners, seals, and small hardware elements required to secure internal sub-assemblies within the gearbox. Positioned within the main valve body and clutch housing interface, this kit ensures that all loose components remain properly torqued and aligned during high-torque operations. The SKU 4642.199.903 is a direct replacement for the original factory-installed hardware, eliminating the need to source individual washers, bolts, or clips separately. When paired with a new 4644101131: TRANSMISSION HOUSING or a 4644301228: TRANSMISSION HOUSING, this kit restores the structural integrity of the transmission assembly.
Symptoms of Failure
When the ZF 4642.199.903 LOOSE PARTS begin to degrade or are missing, operators will notice distinct operational issues. Oil leaks at the housing seam are the most common symptom, as the included seals and gaskets lose their compression. Gear slipping under load occurs when internal fasteners loosen, allowing clutch packs to shift out of alignment. Unusual metallic rattling or vibration from the transmission pan area indicates that loose hardware is moving freely inside the case. Finally, erratic shift timing may develop if the valve body mounting hardware becomes compromised, leading to delayed engagement.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.199.903 |
| OEM Reference | ZF 4642.199.903 |
| Material Composition | Steel, Nitrile Rubber, Zinc-Plated Alloy |
| Weight (Kit) | 0.45 kg (1.0 lb) |
| Kit Contents | Bolts, Washers, O-Rings, Lock Plates |
| Operating Temperature Range | -40°C to +120°C |
| Thread Pitch (Primary Bolt) | M8 x 1.25 |
Compatibility
This LOOSE PARTS kit is engineered primarily for the ZF WG 200 Series transmissions, including the WG200, WG210, and WG220 variants. It is also compatible with the ZF WG 180 Series when used in conjunction with the correct 4644301298: COVER PLATE and 0634306525: O-RING. The kit is not suitable for the Ecomat or Ecolife series without additional adapter hardware. Always verify the presence of the 0730365067: TYPE PLATE on your transmission to confirm the exact model variant before ordering. For secure mounting, ensure the 0631311009: GROOVED STUD is also inspected during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101131 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301228 | TRANSMISSION HOUSING | Alternative housing variant for WG200 |
| 0730365067 | TYPE PLATE | Identification plate for model verification |
| 0631311009 | GROOVED STUD | Alignment stud for housing assembly |
| 4644301298 | COVER PLATE | Seals the valve body access port |
| 0634306525 | O-RING | Hydraulic seal for fluid passages |
| 0636305026 | SCREW PLUG | Closes oil drain or test ports |
| 4475280078 | ADAPTER | Connects external cooler lines |
| 0501316470 | BREATHER | Equalizes internal pressure |
| 4644301279 | SCREEN SHEET | Filters debris from oil flow |
